Amp Camp Pre+Headphone Amp - ACP+

Nelson Pass

The one and only
Paid Member
2001-03-29 12:38 am
I am starting the ACP+ build thread.

I have posted the documentation for the ACP+ preamp/headphone amp
which is the subject of the DIY build session on Saturday Nov 9 at the
Burning Amp Festival.

FIRST WATT

I have assembled a total of 55 kits for the occasion, of which I
understand 30 will be built on site and the rest distributed in some
fashion.

Our member 6L6 has been working on his build guide as well.

As with the ACA, I anticipate it being available in the store soon.

:cheers:
 
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dewdrop

Member
2004-03-07 4:35 pm
Papa, love another project from you!

Unfortunately, I am based in Singapore and can't make a trip to BAF 2019 due to the distance. I tell myself i will make the trip some day. ;-)

If the kits are ever available to the greedy boys in the Far East before the store, let me know.

Ed
P.S.: did you sign off the year as 29 on purpose? :)
 
:clown:
 

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hirscwi

Member
Paid Member
2014-03-06 2:18 am
Indianapolis, IN, USA
I had hoped to be able to make this my first BAF but alas, someone else in our household had other ideas...

I am in the market for a new headphone amp so I'll look forward to availability of this one. It appears to be superb from the write-up.

Thank you, Mr. Pass, for another of your fine creations and generous donation to this community!
 

PRR

Member
Paid Member
2003-06-12 7:04 pm
Maine USA
www.diyaudio.com

Looks like 76k to me.

Have I slipped a cog? (Again?)

In solid-state work this does not matter. But there are some tube and passive sources which may strain mildly in 20k and be fine for >47k.

OTOH: why not R2 R3 = 1Meg? The JFET won't care. Rin now 500k. Then a 0.1uFd film-cap for C1 to reduce kneejerk reaction to an electrolytic (not that I care about an ample e-cap). I suppose price is a goal?
 
Looks like 76k to me.

Have I slipped a cog? (Again?)

In solid-state work this does not matter. But there are some tube and passive sources which may strain mildly in 20k and be fine for >47k.

OTOH: why not R2 R3 = 1Meg? The JFET won't care. Rin now 500k. Then a 0.1uFd film-cap for C1 to reduce kneejerk reaction to an electrolytic (not that I care about an ample e-cap). I suppose price is a goal?



ALPS