B1 r2 proto or prod?

[codyt]

Not sure if the B1 rev2 was ever formally made available to public, or if this is a prototype. Unfortunate if this is another prototype being sold on open market. Beautiful layout though!

First Watt B1 r2 Buffer Preamp pass lab | eBay

 

[Zen Mod]

humor and wit fully visible on that one pcb pic, so no doubt in originality

was it available commercially and if - for how long .......... question for Pa

 

[codyt]

ZM, do those test points (assuming) serve any other purpose beyond probing? I know some tricks of trade are used for optimizing impedance/resistance of traces, but always wondered about these.

 

[Zen Mod]

those are simple vias ........ and he's so long in the biz that he doesn't need special test points

observe traces for crosstalk minimizing ...... that's clearly visible

 

[wg45]

Not sure if the B1 rev2 was ever formally made available to public, or if this is a prototype. Unfortunate if this is another prototype being sold on open market. Beautiful layout though!

First Watt B1 r2 Buffer Preamp pass lab | eBay

They seem to all wind up in South Korea....

 

[2 picoDumbs]

Pretty sure the Firstwatt B1 being sold is the R2.
The manual just hasn't been updated.

Been available for many years already.

 

[Dennis Hui]

Isn't that just the current production version?

 

[codyt]

The one I recall being production is the cap-coupled rev1. Very cool to see other B1 variants in official FW attire

 

[codyt]

...observe traces for crosstalk minimizing ...... that's clearly visible

Ah, that makes sense

 

[2 picoDumbs]

The one I recall being production is the cap-coupled rev1. Very cool to see other B1 variants in official FW attire

Not anymore.

It's been B1 R2 for many years now.

 

[nr12]

It is also offered here:
FS: First Watt B1 r2

 

[Ryan200]

I bought this unit

It arrived from South Korea today. The manual is dated 3/1/15 and is the same as the Rev1 manual online except that it has REV 2 DIRECT COUPLED written above the creator's signature.

This is my first N. Pass product and wow. I was a little worried that ol' Nelson wouldn't live up to the hype. I shouldn't of worried. This thing is sublime. Cleaner than my Sansui c-2101 and fuller than my McIntosh MAC-3. All while using a $20 DAC! Can't wait for my ADCOM GDA-600 to arrive!

 

[2 picoDumbs]

Congratulations.
Very wise purchase.

 

[codyt]

It arrived from South Korea today. The manual is dated 3/1/15 and is the same as the Rev1 manual online except that it has REV 2 DIRECT COUPLED written above the creator's signature.

This is my first N. Pass product and wow. I was a little worried that ol' Nelson wouldn't live up to the hype. I shouldn't of worried. This thing is sublime. Cleaner than my Sansui c-2101 and fuller than my McIntosh MAC-3. All while using a $20 DAC! Can't wait for my ADCOM GDA-600 to arrive!

You should build a rev1 and compare them side-by-side. PassDiy

 

[Ryan200]

I may do a rev1 or korg B-1 down the road but first I have a 6-24 crossover board to build.. and a speaker for it similar to a totem model 1. Been too busy lately to do either but I'll post pics. Next project is swapping in Mundorfs and Lundahls in my Elekit TU-8200. Quick and easy.

 

[wdecho]

I have built both the ver1 and ver2 and I much prefer the version 2. The B1 V2 is my main control device for all my amplifiers being I do not need gain in a linestage with my speakers. I also have Wayne's linestage and it is fantastic but as said above it does not get much use in my setup.

Forgot to mention I built the V2. Such a simple build on a perf board no made board is really needed.

 

[Ryan200]

I want to try it with other amps but I just can't unplug it from my hk505 because it sounds so darn good. I suspect it won't have enough gain for the Decware with my current speakers but we'll see. I have lots of auditioning to do!!

 

[Nelson Pass]

There were two versions.

 

[codyt]

There were two versions.

Do you happen to have the version with the autoformer handy as well?

 

[2 picoDumbs]

It's on youtube