digi01

Very well done !!!

papaya86 ygpm

I think making CCS and rail splitter PCBs is very meaningful, because it's not just can be used for PPA, but other project as well.HA3-5002 is not very common, i suggest to make a converter for BUF634 to be used in PPA board.Next, diamond buffer, i think sijosae is more experienced in this, i will ask for his advice.

to aaa,YGPM. loo at this site...for top grade parts: http://www.partsconnexion.com/partscomponents.php

congratulations! I am waiting for your tube headamp

YGPM

P1 have sold. P2 continue P.S.the enclose size is 112X80X38mm.

photo,

P2 on the left, transistor BUFFER inside.the amp sound is fast and trends,very good stage.suitable for Sennheiser or AKG. heavy duty volume knob,pure white color LED.powerd by 2 9V battery or 18-24VDC.the amp is soft start,no pop sound when turn on it. P1 on the right,IC based amp.clear&warm sound,suitable for Grado or er4p/4s. heavy duty volume knob,blue color LED.powerd by 2 9V battery or 18-24VDC.soft start. If you interested,PM me for detail. edit:over.

allan,good building!I like your style.

SGD,sorry

budget GD200.or trade with my headamp.

wooow!I guess it surely need enough positiveness to plan and assembled it!go ahead aaa,good works

ANYHOW,the boards is top grade,dark blue color looks with pleasure.

the board has a small bug,but it is all right for me.

i got the boards today,thank you huangyong.

it powered by 4 of 6V3AH batterys,split +/- 12V.with 4 OHM load,the amp can output 2X 7W rms power the case is pure aluminium and its surface dimension is enough to dispel the heat. inner pic,

congratulations! I agree with bram,your layout is skillful

excellent p2p assembly! Merry Christmas!your guys

footprint layer.

yes,wish you like it i have send you a special nippers for rolling the chips. the sound is mainly based on the op amp that you use.have you see bram's thread?

power on!

neat buffer.what amp is it to feed? I am glad to look more and more tube diy in SGH.congratulations!!!

1W per channel.surely it can drive K1000.i'll set up a 4pins socket for to feed K1000. yes,the parts of the amp is costly