Tube preamp

[spersanti276]

Hallo, do you have any idea about a good tube preamp to drive CORRECTLY my beloved Aleph 3.
I think that a tubed pre could be a little better than Aleph P or L, don't you?
It has to have:
simple circuitation
stepped(discrete) attenuator
two out (maybe i'll use biamping)
class A
fantastic sound,of course.



Thanks all.

 

[GRollins]

Whether to choose a stepped attenuator is up to the builder, not the designer. The rest is easy enough. I worked up such a circuit a while back. I'll see if I can find it.

Grey

 

[Babowana]

I think that a tubed pre could be a little better than Aleph P or L, don't you?

I think that tube pres and Aleph P and L have the same values in different ways. I think SRPP or Marantz 7 type tube pres are simple enough for diy.

 

[MikeW]

I built an Aikido. It sounded very nice. Not better than the Pass pre-amps but different.

 

[spersanti276]

I'm sorry for the misunderstanding, I forgot that this is a DIY

FORUM.

I didn't mean to build a tubed preamplifier by myself (I'm not even

able to solder!), I need an advice for an existing one with those

peculiarities.

Thanks in advance and sorry for my bad English.

Stefano

 

[DocLorren]

Grey,

You are still invited to come up with your tube pre. Enlighten us!

 

[sandstorm33]

Grey,

You are still invited to come up with your tube pre. Enlighten us!

Come on ..cough it up!!

 

[GRollins]

I did a quick run-through of the group of schematics I thought it was in and didn't find it. I have many other places to look. The problem being that it was several years ago and I generate a lot of schematics during the course of any given year. Some I try. Some I don't. A lot of them are variations on circuits I'm really serious about. For instance, there are probably close to thirty files related to the amp I've been working on, and it's only going to get worse as time goes by, because I've got at least two more major branches that I want to explore if/when I have time and money. On the other hand, I'm on the verge of getting burned out on this circuit, so I may give it a rest and hit the phono stage for a while just to give the amp-related portions of my noggin a rest (and to avoid having to face the cost of heatsinks and a "real" chassis--at least phono stages are manageable in terms of power supplies and heat dissipation).

Grey

 

[Baumi]

I do happy listening with a Combination of ZEN V4 with a Norwood-Still Tube-pre wich uses the 12B4A (AXpress ...?)I put the Stepped Attenuator of 100K after the Pre instead of in Front.I like the "non Sound" and clearness without "Edges".Nice!
Caution:Use only with a glass of Ardbeg(W.)!!!Chears

 

[flg]

I built an Aikido. It sounded very nice. Not better than the Pass pre-amps but different.

I have aikido driving an abreviated f4 Nothing better yet... But F4 needs Output voltage levels to drive it? what do you need?
Maybe I don't understand the question? Do you need voltage gain? How much? Aikido has many variants and "sounds" due to this choose your favorite tube stuff...
I need a buffer like B1 for the attenuator(volumme) and my "ZV8" like pre (F3 with 300ohm load, driving 10k)