Spring 2014 Newsletter
Since spring is finally, reluctantly, grudgingly showing up, I thought it was time for a Spring 2014 newsletter.
Here's the link: Tortuga Audio Newsletter – Spring 2014 | Tortuga Audio
A few announcements and updates. The big deal item is next week the LDR3x.V2 gets released!
Cheers,
Morten
Since spring is finally, reluctantly, grudgingly showing up, I thought it was time for a Spring 2014 newsletter.
Here's the link: Tortuga Audio Newsletter – Spring 2014 | Tortuga Audio
A few announcements and updates. The big deal item is next week the LDR3x.V2 gets released!
Cheers,
Morten
LDR3x.V2 Pre-order Discount Ends May 6th
Just a quick reminder that the $199 pre-order price on the new LDR3x.V2 Preamp Controller Board expires midnight Tuesday May 6th.
When the LDR3x.V2 is released on May 7th the price goes up to $259.
You can pre-order the LDR3x.V2 here: LDR3x.V2 Passive Preamp Controller | Tortuga Audio
Just a quick reminder that the $199 pre-order price on the new LDR3x.V2 Preamp Controller Board expires midnight Tuesday May 6th.
When the LDR3x.V2 is released on May 7th the price goes up to $259.
You can pre-order the LDR3x.V2 here: LDR3x.V2 Passive Preamp Controller | Tortuga Audio
If you've been thinking about building your own LDR (light dependent resitor) based passive preamp, this is the last day to pre-order our latest offering, the LDR3x.V2.
They're $199 now but the price goes to $259 tomorrow once the board is officially released.
The V2 builds on the very successful V1 but now includes built-in auto-calibration plus replaceable LDR modules so no matter how the LDRs may drift or age over time, your LDR preamp will always be optimally calibrated. And if an LDR does eventually go bad (or we come up with new/better LDRs), you can just pull out the old one and pop in a new one. Easy peasy.
And since it's software driven, you'll benefit from any upgrades down the road.
The LDR3x.V2 - the best long term value in DIY LDR based passive preamps.
Pics of the new LDR3x.V2 Preamp Controller Board
A few pics of the new LDR3x.V2 board. The piggy back board on the backside is part of the auto-calibration system
$259.
Auto-calibration. Always optimized.
Replaceable LDR modules. Keeps on going.
More info on the LDR3x.V2 here: LDR3x.V2 Passive Preamp Controller | Tortuga Audio
A few pics of the new LDR3x.V2 board. The piggy back board on the backside is part of the auto-calibration system
$259.
Auto-calibration. Always optimized.
Replaceable LDR modules. Keeps on going.
More info on the LDR3x.V2 here: LDR3x.V2 Passive Preamp Controller | Tortuga Audio
An externally hosted image should be here but it was not working when we last tested it.
LDR3 Customer Feedback
I live for notes like this. Recent email from an LDR3 customer contained the following paragraph...
"Overall, I'm enjoying the Tortuga LDR3 immensely. It's mating up to the Job 225 seamlessly and I feel it's leaps and bounds better than any TVC I've heard and used in my own setup. For the first time since I've joined this hobby, I finally feel like I'm listening to real music, and not a reproduction of music. All curiosity of "should I upgrade this or that" has seemed to disappear and all I'm left with is enjoyment of music in it's truest form. Thank you so much for what I believe to be my best purchase ever made in audio." - Steven Zaointz
The combination of the LDR3 with the Job 225 amp is proving to be fantastic match for several of our customers.
http://www.tortugaaudio.com/product/ldr3-passive-preamp/
I live for notes like this. Recent email from an LDR3 customer contained the following paragraph...
"Overall, I'm enjoying the Tortuga LDR3 immensely. It's mating up to the Job 225 seamlessly and I feel it's leaps and bounds better than any TVC I've heard and used in my own setup. For the first time since I've joined this hobby, I finally feel like I'm listening to real music, and not a reproduction of music. All curiosity of "should I upgrade this or that" has seemed to disappear and all I'm left with is enjoyment of music in it's truest form. Thank you so much for what I believe to be my best purchase ever made in audio." - Steven Zaointz
The combination of the LDR3 with the Job 225 amp is proving to be fantastic match for several of our customers.
http://www.tortugaaudio.com/product/ldr3-passive-preamp/
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LDR3x.V2 Input Impedance Spec Raised from 10k to 20k
After some critical listening to the new ldr3x.V2 board, we've bumped the input impedance spec from 10k to 20k. At least on our test rig (SS amp with 20k input impedance), it resulted in noticeably improved sound. The sound stage got wider and more 3 dimensional and the stereo center moved further back and not as out in front as before. And the dynamics improved as well. I knew it was better because I blew through 3 hours of listening to one tune after another because it sounded so damn good.
This is very reminiscent of the improvements noted back when we introduced the HiZ upgrade last year. We really aren't doing anything different in that respect with the V2 but the Auto Calibration feature makes it much much easier to change the impedance and note the difference. It took about 10 minutes to run through the full calibration cycle for the 4 LDRs and after firing it back up again the benefits of 20k were quite obvious.
So, the ldr3x.V2 is now officially a 20k input impedance preamp controller board. The updated attenuation and impedance curves are shown below. A detailed explanation of these curves can be found in our online documentation here: Product Documentation | Tortuga Audio
The really cool thing (at least from a developer's perspective) is this change required editing one line of software code and changing the number 10000 to 20000. Cool beans.
Now, back to digging out from under our backlog of orders.
Cheers,
Morten
After some critical listening to the new ldr3x.V2 board, we've bumped the input impedance spec from 10k to 20k. At least on our test rig (SS amp with 20k input impedance), it resulted in noticeably improved sound. The sound stage got wider and more 3 dimensional and the stereo center moved further back and not as out in front as before. And the dynamics improved as well. I knew it was better because I blew through 3 hours of listening to one tune after another because it sounded so damn good.
This is very reminiscent of the improvements noted back when we introduced the HiZ upgrade last year. We really aren't doing anything different in that respect with the V2 but the Auto Calibration feature makes it much much easier to change the impedance and note the difference. It took about 10 minutes to run through the full calibration cycle for the 4 LDRs and after firing it back up again the benefits of 20k were quite obvious.
So, the ldr3x.V2 is now officially a 20k input impedance preamp controller board. The updated attenuation and impedance curves are shown below. A detailed explanation of these curves can be found in our online documentation here: Product Documentation | Tortuga Audio
The really cool thing (at least from a developer's perspective) is this change required editing one line of software code and changing the number 10000 to 20000. Cool beans.
Now, back to digging out from under our backlog of orders.
Cheers,
Morten
I'm going to wait for feedback and consensus from V2 owners before deciding anything about further upgrades to the V1. When it comes to overall quality of sound it may prove to be a case of differences without distinction. Or not.
We went around the track a few times with the V1 last year trying 10k, 20k and even 50k impedance settings before settling on 10k. Even then, there were some who reported that 50k was superior.
Changing the impedance of the V1 is a PITA. We have to dig out their original test data for each individual unit, rerun the data through our modified program, burn a new chip, ship the chip, swap out the old with the new etc. If we added up all of our time and materials for all that, I doubt many would be happy with the price tag. I'd want to be very sure it was worth it before offering that up.
At least with the V2 design, we can email out software revisions or just post them on our website for owners to download and upload into their V2 boards.
We may end up posting 10k, 20k and 50k versions of the V2 software and let owners try all or none and decide what sounds best. I suspect the answer will be more system dependent than not. It would definitely be interesting.
Cheers,
Morten
V2 Software Updates
Our software update/download page is now live on our website for the new ldr3x.V2 preamp controller board. :thumb:
We encourage owners of the V2 board to update their software to the latest version. This is especially important for those with the earliest versions 1.0.0 through 1.0.3 of the software since numerous bugs etc. have been taken care of since initial release. We anticipate that updates will slow down substantially over the next few weeks as the product matures.
Please note that owners of dual V2 boards used in balanced audio configurations need to upload software updates separately into each board.
The software update/download page can be found here under the Support menu: Downloads | Tortuga Audio
More info on the LDR3x.V2 here: LDR3x.V2 Passive Preamp Controller | Tortuga Audio
Our software update/download page is now live on our website for the new ldr3x.V2 preamp controller board. :thumb:
We encourage owners of the V2 board to update their software to the latest version. This is especially important for those with the earliest versions 1.0.0 through 1.0.3 of the software since numerous bugs etc. have been taken care of since initial release. We anticipate that updates will slow down substantially over the next few weeks as the product matures.
Please note that owners of dual V2 boards used in balanced audio configurations need to upload software updates separately into each board.
The software update/download page can be found here under the Support menu: Downloads | Tortuga Audio
More info on the LDR3x.V2 here: LDR3x.V2 Passive Preamp Controller | Tortuga Audio
DIY build using the LDR3x.V2
A great example of a beautiful DIY passive preamp build using our latest LDR3x.V2 preamp controller board.
Original post here on audiocircle.com: Customer Projects & Pics with the LDR3x Preamp Controller
A great example of a beautiful DIY passive preamp build using our latest LDR3x.V2 preamp controller board.
Original post here on audiocircle.com: Customer Projects & Pics with the LDR3x Preamp Controller
Some Perspective on Designing with LDRs
1/ they are impracticable for stereo use as they cannot make matching pair.
2/ if you do spend loads of time matching pairs then they drift with age and **** it all up again
3/ they are prone to failure
These 3 points were mentioned on another audio forum as good reasons to avoid LDRs. Since I've personally gone through several LDR design iterations, I thought I'd share my perspective on working with LDRs.
In brief, designing with LDRs is a PITA. There's considerable variability between each individual LDR even of the same make/model. They are highly nonlinear especially over a wider resistance range. Given a choice, it's a rare bird that would willingly choose to work with highly variable nonlinear components in audio equipment design. So why do it? Because it's worth it if you're seeking the best possible audio experience. If you've spent some time around LDR preamps you get the joke pretty quickly. For example, I just had a customer tell me he's selling his $10k tube preamp after auditioning our LDR passive.
As with all analog components, LDRs will drift. LDRs are actually 2 analog components (photoresistor & LED) in an integral package. Most drift just a little. Some quite a lot. If you start with a decently matched set, a little drift isn't a big deal, especially if they all more or less drift similarly. Iv'e had an LDR preamp unit running for several years with no discernible drift that matters. But as I've found out, you can't count on that.
The first version of our LDR passive pre-amp design was entirely dependent on starting with matched sets of LDRs. We had to characterize every LDR over the full resistance range we needed. These tests results went into a database. We'd test 50-100 LDRs at a time. Then we would take that data and run it through a sorting algorithm to select the 4 or 8 best matched LDRs and use those in our next build. A lot of effort went into test rigs, data acquisition, and post-test data processing. We had to store each tested LDR with its own ID tag. Did I mention PITA?
In our second generation design, we still tested each LDR but applied a very different approach where we no longer needed perfectly matched LDRs. Instead, we simply picked pairs of test data points from each LDR that yielded the necessary dB attenuation setting for each volume step for each channel and placed those settings into a table used to drive each LDR at each volume step. Of course this was only possible because our design utilizes a software based digital microcontroller that drives the analog circuitry which regulates each individual LDR. But even with this approach, we had to custom test and calibrate each pre-amp build and store the resulting test data in our IT system. If any software changes needed to made to a customer's unit we had to utilize that original test data. If the LDRs drifted too much, the unit would need to be sent back for retesting and recalibration. This didn't happen very often but once in a while is frankly once too often.
With our third and most recent generation design ("V2"), we got ambitious and made the leap to self-contained auto-calibration where the preamp continuously recalibrates each LDR against a programmed dB attenuation schedule. No pre-matching or testing. Just plug in 4 LDRs and less than 10 minutes later it's ready to go. If one LDR happens to be too far out of spec to calibrate properly or just fails, you pop it out and plug in a replacement, wait 10 minutes and you're back in business. This is a more complex design, involves 12 bit DACs and ADCs, and consequently costs more, but it's completely software driven and the software can be updated via a USB port and a PC. We plan on selling high end finished units and want our customers to know they're getting a great long-term value.
To sum it up, I generally agree with the first 2 points but they can be successfully mitigated if not totally overcome. It's called engineering.
On the last point, I have to disagree. My own experience suggests maybe 1% of the LDRs we use are prone to infant mortality and there are ways of culling those out. The rest will likely live for several 10's of thousands of hours. Kind of like tubes only better.
Cheers,
Morten
1/ they are impracticable for stereo use as they cannot make matching pair.
2/ if you do spend loads of time matching pairs then they drift with age and **** it all up again
3/ they are prone to failure
These 3 points were mentioned on another audio forum as good reasons to avoid LDRs. Since I've personally gone through several LDR design iterations, I thought I'd share my perspective on working with LDRs.
In brief, designing with LDRs is a PITA. There's considerable variability between each individual LDR even of the same make/model. They are highly nonlinear especially over a wider resistance range. Given a choice, it's a rare bird that would willingly choose to work with highly variable nonlinear components in audio equipment design. So why do it? Because it's worth it if you're seeking the best possible audio experience. If you've spent some time around LDR preamps you get the joke pretty quickly. For example, I just had a customer tell me he's selling his $10k tube preamp after auditioning our LDR passive.
As with all analog components, LDRs will drift. LDRs are actually 2 analog components (photoresistor & LED) in an integral package. Most drift just a little. Some quite a lot. If you start with a decently matched set, a little drift isn't a big deal, especially if they all more or less drift similarly. Iv'e had an LDR preamp unit running for several years with no discernible drift that matters. But as I've found out, you can't count on that.
The first version of our LDR passive pre-amp design was entirely dependent on starting with matched sets of LDRs. We had to characterize every LDR over the full resistance range we needed. These tests results went into a database. We'd test 50-100 LDRs at a time. Then we would take that data and run it through a sorting algorithm to select the 4 or 8 best matched LDRs and use those in our next build. A lot of effort went into test rigs, data acquisition, and post-test data processing. We had to store each tested LDR with its own ID tag. Did I mention PITA?
In our second generation design, we still tested each LDR but applied a very different approach where we no longer needed perfectly matched LDRs. Instead, we simply picked pairs of test data points from each LDR that yielded the necessary dB attenuation setting for each volume step for each channel and placed those settings into a table used to drive each LDR at each volume step. Of course this was only possible because our design utilizes a software based digital microcontroller that drives the analog circuitry which regulates each individual LDR. But even with this approach, we had to custom test and calibrate each pre-amp build and store the resulting test data in our IT system. If any software changes needed to made to a customer's unit we had to utilize that original test data. If the LDRs drifted too much, the unit would need to be sent back for retesting and recalibration. This didn't happen very often but once in a while is frankly once too often.
With our third and most recent generation design ("V2"), we got ambitious and made the leap to self-contained auto-calibration where the preamp continuously recalibrates each LDR against a programmed dB attenuation schedule. No pre-matching or testing. Just plug in 4 LDRs and less than 10 minutes later it's ready to go. If one LDR happens to be too far out of spec to calibrate properly or just fails, you pop it out and plug in a replacement, wait 10 minutes and you're back in business. This is a more complex design, involves 12 bit DACs and ADCs, and consequently costs more, but it's completely software driven and the software can be updated via a USB port and a PC. We plan on selling high end finished units and want our customers to know they're getting a great long-term value.
To sum it up, I generally agree with the first 2 points but they can be successfully mitigated if not totally overcome. It's called engineering.
On the last point, I have to disagree. My own experience suggests maybe 1% of the LDRs we use are prone to infant mortality and there are ways of culling those out. The rest will likely live for several 10's of thousands of hours. Kind of like tubes only better.
Cheers,
Morten
New LDRx & LDRxB (balanced) Passive Preamps
As of 7.1.14 we are announcing the upcoming release of our new line of finished LDRx & LDRxB Passive Preamp products. As things stand now, the official release date is July 31, 2014. Despite the epic delay is getting this product ready, this is the real deal. It's really going to happen. Soon. No, really!
When released, the LDRx will replace our existing LDR3 and LDR6 offerings and can be ordered with 3-6 inputs. The LDRxB is our first balanced passive preamp with a blend of 3 balanced plus 1 alternative unbalanced input, 2 balanced outputs plus also an unbalanced output. Both versions will be housed in our new attractive enclosure design and utilize our latest LDR3x.V2 preamp controller board featuring auto-calibration.
As of today, we are accepting pre-orders. Details on the LDRx & LDRxB Passive Preamps can be found on our website via this link: LDRx & LDRxB | Tortuga Audio
Here is our latest CAD renderings. Actual pics to follow when they're available.
Cheers,
Morten
As of 7.1.14 we are announcing the upcoming release of our new line of finished LDRx & LDRxB Passive Preamp products. As things stand now, the official release date is July 31, 2014. Despite the epic delay is getting this product ready, this is the real deal. It's really going to happen. Soon. No, really!
When released, the LDRx will replace our existing LDR3 and LDR6 offerings and can be ordered with 3-6 inputs. The LDRxB is our first balanced passive preamp with a blend of 3 balanced plus 1 alternative unbalanced input, 2 balanced outputs plus also an unbalanced output. Both versions will be housed in our new attractive enclosure design and utilize our latest LDR3x.V2 preamp controller board featuring auto-calibration.
As of today, we are accepting pre-orders. Details on the LDRx & LDRxB Passive Preamps can be found on our website via this link: LDRx & LDRxB | Tortuga Audio
Here is our latest CAD renderings. Actual pics to follow when they're available.
Cheers,
Morten
Discontinuing Sales of the LDR3 and LDR6
A brief note to advise that with the imminent release of the new LDRx and LDRxB Passive Preamp models, that we have suspended sales of the LDR3 and LDR6.
Info on the new LDRx and LDRxB can be found here: LDRx & LDRxB Passive Preamps | Tortuga Audio
These new models are currently available for pre-order at a 10% discount. The discount period ends they're released. Plus with pre-orders you don't make any payments until such time as the new models are released and begin to ship.
Cheers,
Morten
A brief note to advise that with the imminent release of the new LDRx and LDRxB Passive Preamp models, that we have suspended sales of the LDR3 and LDR6.
Info on the new LDRx and LDRxB can be found here: LDRx & LDRxB Passive Preamps | Tortuga Audio
These new models are currently available for pre-order at a 10% discount. The discount period ends they're released. Plus with pre-orders you don't make any payments until such time as the new models are released and begin to ship.
Cheers,
Morten
See you at 2014 RMAF!
Tortuga Audio is planning to be at the 2014 Rocky Mountain Audio Fest in October.
In addition to Tortuga Audio's LDRx/LDRxB Passive Preamp, we'll be co-showing one of Volti Audio's (Volti Audio - Hi-Efficiency Horn Speakers) remarkable hand crafted horn speakers.
If you're attending the RMAF please plan to stop by and see us.
Cheers,
Morten
Tortuga Audio is planning to be at the 2014 Rocky Mountain Audio Fest in October.
In addition to Tortuga Audio's LDRx/LDRxB Passive Preamp, we'll be co-showing one of Volti Audio's (Volti Audio - Hi-Efficiency Horn Speakers) remarkable hand crafted horn speakers.
If you're attending the RMAF please plan to stop by and see us.
Cheers,
Morten
LDRx/LDRxB Passive Preamps
We sent a notice out around 10 days ago to everyone with pre-orders that the release date for the LDRx/LDRxB has been pushed out to mid-August. Everything is done and ready except for fabrication of the enclosures which is well underway. We are doing the enclosure fab work in-house except for the anodizing. Milling the parts and the turnaround on the anodizing is the key reason for the pushing out the release date.
The 10% pre-order discount is still available until the release date. More info here: LDRx & LDRxB Passive Preamps | Tortuga Audio
The pic below is a set of front panels fresh off the CNC mill before brushing/anodizing. Note the milled out center stripe is for the dark acrylic inlay which will cover up the "window".
Here is a link to a youtube video showing one of these front panels being milled on our CNC machine. We removed the dust/vacuum cover so the cutting would be visible for the video which is why there are cuttings everywhere. Cutting Front Panels for New LDRx/LDRxB Passive Preamps - YouTube
We sent a notice out around 10 days ago to everyone with pre-orders that the release date for the LDRx/LDRxB has been pushed out to mid-August. Everything is done and ready except for fabrication of the enclosures which is well underway. We are doing the enclosure fab work in-house except for the anodizing. Milling the parts and the turnaround on the anodizing is the key reason for the pushing out the release date.
The 10% pre-order discount is still available until the release date. More info here: LDRx & LDRxB Passive Preamps | Tortuga Audio
The pic below is a set of front panels fresh off the CNC mill before brushing/anodizing. Note the milled out center stripe is for the dark acrylic inlay which will cover up the "window".
Here is a link to a youtube video showing one of these front panels being milled on our CNC machine. We removed the dust/vacuum cover so the cutting would be visible for the video which is why there are cuttings everywhere. Cutting Front Panels for New LDRx/LDRxB Passive Preamps - YouTube
Tour for the LDRxB Balanced Passive Preamp
We're organizing a tour for our soon to be released LDRxB Balanced Passive Preamp. Hope to kick it off later in September.
If you're interested in participating, follow this link to our forum on AudioCircle for more info. LDRx/LDRxB Passive Preamp Tour - 2014/2015
Cheers,
Morten
We're organizing a tour for our soon to be released LDRxB Balanced Passive Preamp. Hope to kick it off later in September.
If you're interested in participating, follow this link to our forum on AudioCircle for more info. LDRx/LDRxB Passive Preamp Tour - 2014/2015
Cheers,
Morten
Pic of LDRxB Rear Panel - Final Fitup
Here's a pic of the rear panel of the LDRxB Balanced Passive Preamp showing final fitup of parts. The XLR jacks are heavy duty cast Neutriks with gold connections. The RCA jacks are Cardas. As shown here the panel (3.25" by 12.5") is raw brushed aluminum prior to being black anodized which happens later this week. The XLR socket in the lower right is standing in for a dual USB socket which uses the same XLR form factor and should arrive from our supplier in a few days. To the left of the power entry module is the 115/230AC selector switch. Above that is the 12V Trigger Out.
We are on track for release at the end of the month at which time we'll start building and shipping units beginning the first week of September starting with existing pre-orders. There is still time to place pre-orders for at 10% discount through Sunday August 31st. LDRx & LDRxB Passive Preamps | Tortuga Audio
Cheers!
Morten
Here's a pic of the rear panel of the LDRxB Balanced Passive Preamp showing final fitup of parts. The XLR jacks are heavy duty cast Neutriks with gold connections. The RCA jacks are Cardas. As shown here the panel (3.25" by 12.5") is raw brushed aluminum prior to being black anodized which happens later this week. The XLR socket in the lower right is standing in for a dual USB socket which uses the same XLR form factor and should arrive from our supplier in a few days. To the left of the power entry module is the 115/230AC selector switch. Above that is the 12V Trigger Out.
We are on track for release at the end of the month at which time we'll start building and shipping units beginning the first week of September starting with existing pre-orders. There is still time to place pre-orders for at 10% discount through Sunday August 31st. LDRx & LDRxB Passive Preamps | Tortuga Audio
Cheers!
Morten
10% Discount on LDRx & LDRxB Extended Through Sept 1st
In recognition of this Labor Day Weekend holiday and the release of our new LDRx and LDRxB Passive Preamps, we are extending the 10% pre-release discount through midnight tomorrow (Monday - September 1st).
We commence building and shipping LDRx and LDRxB units on Tuesday! Woot woot!
LDRx - 10% off at $1346 - LDRx Passive Preamp | Tortuga Audio
LDRxB (balanced) - 10% off at $2156 - LDRxB Balanced Passive Preamp | Tortuga Audio
Cheers!
Morten
In recognition of this Labor Day Weekend holiday and the release of our new LDRx and LDRxB Passive Preamps, we are extending the 10% pre-release discount through midnight tomorrow (Monday - September 1st).
We commence building and shipping LDRx and LDRxB units on Tuesday! Woot woot!
LDRx - 10% off at $1346 - LDRx Passive Preamp | Tortuga Audio
LDRxB (balanced) - 10% off at $2156 - LDRxB Balanced Passive Preamp | Tortuga Audio
Cheers!
Morten
First pics of our new LDRx & LDRxB Passive Preamps
As we were shooting these pics I commented that these looked like audio porn shots. When we have more time I'll get some lower temperature shots against neutral/white background. These were the best we could do at the end of a crazy busy day.
Enjoy!
The rear panel is for the LDRxB Balanced unit with the optional Cardas Gold XLR jacks. Bling bling!
More info here:
Single-ended: LDRx Passive Preamp | Tortuga Audio
Balanced: LDRxB Balanced Passive Preamp | Tortuga Audio
As we were shooting these pics I commented that these looked like audio porn shots. When we have more time I'll get some lower temperature shots against neutral/white background. These were the best we could do at the end of a crazy busy day.
Enjoy! The rear panel is for the LDRxB Balanced unit with the optional Cardas Gold XLR jacks. Bling bling!
More info here:
Single-ended: LDRx Passive Preamp | Tortuga Audio
Balanced: LDRxB Balanced Passive Preamp | Tortuga Audio
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
New York Audio Show
If you're planning on attending the upcoming New York Audio Show later this month (Sept/2014), I invite you to stop in and meet our partners at Bright Audio who will be exhibiting our new LDRx Passive Preamp along with some very nice gear from other manufacturers.
Located in the dynamic East Village area of Manhattan, Bright Audio has a unique showroom and offers full service high end audio including installation services to the New York City market.
New York Audio Show 2014 | Home Audio Show | Chester Group
Home Theater, Home Audio, Stereo, New York | Bright Home Theater
If you're planning on attending the upcoming New York Audio Show later this month (Sept/2014), I invite you to stop in and meet our partners at Bright Audio who will be exhibiting our new LDRx Passive Preamp along with some very nice gear from other manufacturers.
Located in the dynamic East Village area of Manhattan, Bright Audio has a unique showroom and offers full service high end audio including installation services to the New York City market.
New York Audio Show 2014 | Home Audio Show | Chester Group
Home Theater, Home Audio, Stereo, New York | Bright Home Theater
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