Pearl 3 Burning Amp 2023

[wayne]

Here is a PDF of of the Pearl 3 from Burning amp 2023 for those of you whom already have circuit boards.

EDIT: Video presentation on Pearl 3 for BAF '23 can be found here - https://burningampfestival.com/videos/


EDIT: Build documentation "Pearl 3 Phono Build Doc-1.0c" is attached below. Version 1.0c is the most current. Download and print.


EDIT: Interview with Wayne about Pearl 3 - #881

EDIT: Modushop/ HiFi200 Chassis set available here - https://www.diyaudio.com/community/threads/pearl-3-burning-amp-2023.404054/post-7538807 https://modushop.biz/site/index.php?route=product/product&product_id=971

EDIT: Online build guide - https://guides.diyaudio.com/Guide/Pearl+3/28

EDIT: SMD soldering tutorial using Pearl 3 -

 

[WBS]

Thanks Wayne!

 

[GKTAUDIO]

Thank you!
Apologies if I'm just missing it, but what is the part number for U2?

 

[chromenuts]

Completely oblivious to this

EDIT: I see now that this was a BAF related project…very nice

Since I knew I couldn’t make it to BAF I remained oblivious

Good luck to those lucky boyz who get to try it out

 

[wayne]

Thank you!
Apologies if I'm just missing it, but what is the part number for U2?

DRV 135 Balanced line driver.

 

[GKTAUDIO]

Thank you, Wayne!

 

[Mark Johnson]

Completely oblivious to this…was there a development thread or discussion within another Pearl thread?

Wayne unveiled the Pearl 3 circuit on Sunday October 1st, at the 2023 Burning Amp Festival. He gave away a few sets of Pearl 3 PCBs to attendees who raised their hands.

Here is a PDF of of the Pearl 3 from Burning amp 2023

 

[Mark Johnson]

I suspect the dual opamps in the red rectangle below, are the RC4580 and the LM833, both from T.I.


_

 

[jackinnj]

"A pearl without tears" -- looks very nice indeed. Congrats.

 

[Zen Mod]

well, here we go again:

 

[PierreQuiRoule]

This is looking really good. Much has changed compared to the already excellent Pearl 2. At first glance...

• Front end receiving feedback (I think)
• New power supply scheme with lower rails
• Op Amps
• Low Freq EQ within an Op Amp feedback loop
• A push Pull output stage

Much savoir faire (know how) gained since Pearl 2 (2010). Wayne spoils us again.
I hope his presentation and gerbers becomes available.

 

[Jacruzer787]

Is this for MM or MC?

 

[wayne]

I have used it for both. Front end gain is adjustable over a wide range. I have tested it from 46 - 70dB gain.
That is the advantage over the original Pearl designs.

 

[Jacruzer787]

I have used it for both. Front end gain is adjustable over a wide range. I have tested it from 46 - 70dB gain.
That is the advantage over the original Pearl designs.

Excellent! What's the likelihood that this will end up in DIYAstore in the future?

 

[6L6]

Absolutely fantastic!!! Thank you Wayne!

 

[wayne]

Excellent! What's the likelihood that this will end up in DIYAstore in the future?

Parts are being collected I have been informed and boards are on order.

 

[6L6]

 

[Plott]

Parts are being collected I have been informed and boards are on order.

This is great news, many thanks!

 

[Jacruzer787]

Parts are being collected I have been informed and boards are on order.

Awesome! Let’s see if next year I can make it to the diy audio mecca aka burning amp and get a chance to meet you!

 

[MEPER]

I am an novice especially regarding phono-amps.......therefor I have a stupid question:
There is a dip-switch at the front-end which can switch-in various resistors / capacitors to load the cartridge.
Regarding the resistors there is as low a value as 50R. When do you need to use such a small value? .....it will almost "kill" the signal from the cartridge?
Or do I read the schematic wrong regarding the dip-switch circuit (it looks like it switch in resistors from input to gnd parallel with the 47k input resistor)?
Is it for very high output cartridges where you need to lower the input signal by loading the cartridge?
I am using DAC only.......and I am used to do everything to preserve as much as the signal as possible