Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: DummyLoad on September 15, 2018, 02:55:04 am

Title: 40W PSE hy-gain.
Post by: DummyLoad on September 15, 2018, 02:55:04 am

this thing is whole lotta fun. spin on 40W SE i posted early in the year. was wondering how it would sound with a bit more gain. added a cold bias unbypassed gain stage. interesting tone.

schematic shows 2x200uF series stack for first filter - actually is 2x450uF. 

--pete

Title: Re: 40W PSE hy-gain.
Post by: sluckey on September 15, 2018, 04:21:24 am

Is that your bedroom amp?   :icon_biggrin:

Title: Re: 40W PSE hy-gain.
Post by: shooter on September 15, 2018, 09:52:05 am

I love our innovation! how does the presence feature act/react, does it work well enough to steal?  :icon_biggrin:
My baby version gets a little treble bite-e close to max

Title: Re: 40W PSE hy-gain.
Post by: DummyLoad on September 15, 2018, 12:45:11 pm

Quote from: shooter on September 15, 2018, 09:52:05 am

I love our innovation! how does the presence feature act/react, does it work well enough to steal?  :icon_biggrin:
My baby version gets a little treble bite-e close to max

try it. range works ok. amp gets brighter sounding as it should when maxed. tightening up of the low freqs. is what really stands out.


--pete

Title: Re: 40W PSE hy-gain.
Post by: shooter on September 15, 2018, 03:20:53 pm

thx Pete, downloaded the schematic

Title: Re: 40W PSE hy-gain.
Post by: PRR on September 15, 2018, 03:34:37 pm

> Is that your bedroom amp?

No. He puts it on his shoulder and carries it for miles.