Thank you @xrk971! I found it available and faster shipping to the US at another shop: https://www.aliexpress.us/item/3256805961054373.html
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I had good success using a battery bank with USB C power delivery and an adapter cord with PD trigger. The cord has a chip built in that requests the higher voltage from the battery bank. Just check that the powerbank you buy is able to output your desired voltage (12, 15, or 20V).
There is a promotional sale on select Vera-Fi Audio products using this code: DCHIFI24
The code will be active on April 6th through the Friday the 19th effective for 20% off Vera-Link BT amps, Vanguard Scout speakers, and the Caldera 10 powered subwoofer.
The code will be active on April 6th through the Friday the 19th effective for 20% off Vera-Link BT amps, Vanguard Scout speakers, and the Caldera 10 powered subwoofer.
I connected the Vera-Link amp to drive my new Vanguard Archer speakers. Connected the BT from my laptop and found that I could drive it with a 1kHz generator from REW and took an RTA with my calibrated mic. The results show why this amp sounds so good. Doninant 2nd harmonic and decreasing higher orders. Almost like a SE Class A amp. The junk at lower frequencies is partly from ambient room noise from nearby furnace HVAC vent. .
I just installed the Galion TL speakers on some stands which hide the cables but in this case, just the small power line to a 12v wall wart for powering the Vera-Link TWS Bluetooth amplifiers. This is in the upstairs bedroom and I have to say, I was quite pleasantly surprised how great they sound with the TL speakers. Super nice bass and great soundstage. All you need for a bedroom fireplace audio system. Super clean and no mess with amps or wires. The white SMPS wall wart and white cables help minimize the visual clutter.
Detail of the Vera-Link amp:
Detail of the Vera-Link amp:
In 40 years of being into audio I’ve not come across a system with the components in a fireplace. Great use of space/ minimalist 👍👍
As some do, and I have before, I’ve begun deciding what to put in a further system. inside a cabinet chosen for appropriate interior dimensions and appearance.
But, we have a fireplace which we no longer use 🙂
The Vera-Link is a good concept implemented at a very budget friendly price.
as we know, for closer listening esp a study - perfect. Bedroom, kitchen, workshop, etc. What you could call “secondary” systems
But Is there any chance - or probably I should say - when you will be looking in to a version with a more “normal powered” amp?
Even if the Vera-Link from concept to production was what Bluetooth amp could we make that would sell for no more a modest price …
a stereo chip but you’ve done great things with the TPA3255 more than once. I’m guessing you might/ must have given it or other good chip amps some thought
Unlike the Warp 1, the case(s) could be functional cheapies. While that sort of price seems incongruous for a Bluetooth amp - many people in China and other countries like good sound, have reasonable incomes but live in a small apartment.
Some people are attracted to smaller items. Possibly equating miniaturisation with clever design or an uncluttered minimalist aesthetic
Otoh, who likes good sound, has reasonable incomes but live in a small apartment? No idea.
But could easily be more than a billion people
One other chip could be more appropriate
In a small apartment 50-70 good watts per channel would enough. You’re probably aware in the 2000s some got superb sound from the LM3875. I haven’t heard the original Gainclone, but have heard the diy version by Peter Daniel.
The “PD non-inverting 3875”. The clarity is stunning.
(other than excellent parts and PS) probably more than any other reason because he omitted the standard 3875’s standard auxiliary components which provide a normal level of tolerance to the signal the input section receives. It cannot tolerate DC offset in the upstream components; or interconnects with anything other than very low capacitance per metre a/o never longer than six feet
Similar, NVA power amps always said to sound excellent. in USD their 60 wpc is north of 2000. All are said to sound excellent. They're explicit it’s partly because they lack any protection circuit on the outputs. So the speaker cables must have low total capacitance.
Both: components not used = cost a little lower, SQ better by more than a little. With critical limitations on what they are used with
Is it feasible/ has that been done with some Class D amplifiers?
as we know, for closer listening esp a study - perfect. Bedroom, kitchen, workshop, etc. What you could call “secondary” systems
But Is there any chance - or probably I should say - when you will be looking in to a version with a more “normal powered” amp?
Even if the Vera-Link from concept to production was what Bluetooth amp could we make that would sell for no more a modest price …
a stereo chip but you’ve done great things with the TPA3255 more than once. I’m guessing you might/ must have given it or other good chip amps some thought
Unlike the Warp 1, the case(s) could be functional cheapies. While that sort of price seems incongruous for a Bluetooth amp - many people in China and other countries like good sound, have reasonable incomes but live in a small apartment.
Some people are attracted to smaller items. Possibly equating miniaturisation with clever design or an uncluttered minimalist aesthetic
Otoh, who likes good sound, has reasonable incomes but live in a small apartment? No idea.
But could easily be more than a billion people
One other chip could be more appropriate
In a small apartment 50-70 good watts per channel would enough. You’re probably aware in the 2000s some got superb sound from the LM3875. I haven’t heard the original Gainclone, but have heard the diy version by Peter Daniel.
The “PD non-inverting 3875”. The clarity is stunning.
(other than excellent parts and PS) probably more than any other reason because he omitted the standard 3875’s standard auxiliary components which provide a normal level of tolerance to the signal the input section receives. It cannot tolerate DC offset in the upstream components; or interconnects with anything other than very low capacitance per metre a/o never longer than six feet
Similar, NVA power amps always said to sound excellent. in USD their 60 wpc is north of 2000. All are said to sound excellent. They're explicit it’s partly because they lack any protection circuit on the outputs. So the speaker cables must have low total capacitance.
Both: components not used = cost a little lower, SQ better by more than a little. With critical limitations on what they are used with
Is it feasible/ has that been done with some Class D amplifiers?
By definition Bluetooth amps use neither input or speaker cables. Especially like the superb PD gainclone mentioned in my previous post could omitting input a/o protection circuits turn a very good Bluetooth amp into a killer?
I love Class AB amps but for a small piggyback box that is Velcro’d to the back, we need to keep it light and small so Class D is the way to go. The Infineon MA270 Merius is quite good. I will keep this in mind for a next product with more power.