Another VBIGC :)

[Kermit]

Just thought I’d share a few pic’s of my latest project. A valve buffered chipamp. The circuit is pretty much like Joe’s/Franz T-network VBICG. Just a few minor changes in order to use some of the stuff I had lying around.
Haven’t had much time to listen, but at first “glance” it sounds very pleasing, but it lacks some “authority” compared to my Aleph.

Front:

[Kermit]

Another:
Tubes are Phillips ECG 6922

[Kermit]

Inside:
Despite being verry packed (and leads flying al over) theres no hum

[steenoe]

That is a beauty, Kermit Nice job.

compared to my Aleph.

A GC is not a match for an Aleph, sorry

Steen.

[GregGC]

Originally posted by Kermit
Just thought I’d share a few pic’s of my latest project. A valve buffered chipamp. The circuit is pretty much like Joe’s/Franz T-network VBICG. Just a few minor changes in order to use some of the stuff I had lying around.
Haven’t had much time to listen, but at first “glance” it sounds very pleasing, but it lacks some “authority” compared to my Aleph.

Front:

Verry nice !

I bet you have only 1000-1500uf/rail/channel in your PS. Increase it to 4700 and you'll hear totally different sound (personal experience). You'll be pleasantly surprised.

Greg

[Kermit]

Originally posted by steenoe
That is a beauty, Kermit Nice job.
A GC is not a match for an Aleph, sorry

Steen.

Hehe, I know, it’s an unfair comparison. I would be hugely disappointed if it “out battled” my aleph, considering I spent only a fraction of what I did on the aleph.

Greg, thanks for the suggestion, I will try that, think I have a few caps lying around.

[carlosfm]

Originally posted by GregGC
I bet you have only 1000-1500uf/rail/channel in your PS. Increase it to 4700 and you'll hear totally different sound (personal experience). You'll be pleasantly surprised.
Greg

Originally posted by Kermit
Greg, thanks for the suggestion, I will try that, think I have a few caps lying around.

Don't forget the snubber.
Then put it against the Aleph again.

[jackinnj]

nice, but the tube holders remind me of Fritz Lang's movie "Metropolis".

[GregGC]

Originally posted by carlosfm




Don't forget the snubber.
Then put it against the Aleph again.

Carlos,

I take the snubbers for granted and I didn't bother mentioning. I think everybody knows about it. Can't go without them.
I would add also the Zobel and the LR paralel network (10Ohm||0.7uH) in ser with the output. Found it a must in my setup.

Greg

[Kermit]

I thought about snubbers, I used it in my first GC, and to be honest I couldn’t tell the difference. But that was a different chip and different rectifier diodes. As I already have a bridge with snubbers in my first GC it would be easy to pick it out and give it a try in this one. I’ll add that to the list of things to try.
But first things first, I have to make a case for the remote, right now it just sits inside a plastic bag, not something you like to show of on the coffee table