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donsachs

Responses from donsachs

300b lovers
I will also add that for the preamp, I built one with off the shelf Lundahl transformers and then again, I got Dave Geren at Cinemag to wind me the best small output transformer he could after I showed him the circuit.   Better.......   Very trans... 
300b lovers
As I am retiring from constant production of tube gear I wanted to see what was possible.  How good could it sound?  Lynn got me to look at the symmertic Reichert circuit and it looked interesting and off I went.  Then he showed me the Raven pream... 
300b lovers
Actually Lynn said if I built the Symmetric Reichert it would be the best amp I had ever heard.  I like a challenge.   Then I decided if I was going to build it we would figure out the best way.  So we ditched the driver section and came up with a... 
300b lovers
@pindac   Hi, the amps are not even released to the public yet.   Perhaps when they are in full commercial production someone can take one to a local audio group.  I agree that is a great way to let more people here them.  One step at a time.... ... 
300b lovers
@whitestix  When I "voice" amps and preamps I am always trying to make them sound like they are not there.  I have a Lampizator Pacific DAC so the front end is killer.  I am always trying to have the amps vanish.  That is the goal.  They should j... 
300b lovers
@whitestix  I make a change and live with it for at least a few days or a week before deciding.  Yes, the film caps have to run in.  With this amp project I built a stereo version first because I had a few of the Kootenay amp cherry cases laying ... 
300b lovers
..and what Lynn is not saying is that these amps address these problems.   Without going into proprietary detail, I will say that there are two separate power supplies in each amp and that every tube plate in the amp has a healthy inductance betwe... 
300b lovers
I run 46 tubes in my Lampi Pacific DAC and they are wonderful.   You can still find some.  The 45 is now really scarce unless you want to spend a fortune for new production.   I have some 26 I collected for a potential preamp project.  So many tub... 
300b lovers
As Lynn mentioned above, we chose the 6SN7 and the 6V6 because both are in current production and there are very good modern versions of each being built.  Obviously there are lots of 300b choices as well.  I favour the Linlai E-6SN7 beause it sou... 
300b lovers
As they say, if you literally built a straight wire with gain half the people wouldn't like it:)  Everything has a sound.  I will say that these amps have far less of a sound than anything I have ever heard... or not heard... or whatever...  They ... 
300b lovers
@tinear123  The pricing and availability isn't set yet.  Most likely Cloud Sessions of Spatial Audio Labs will keep a wait list and they will have to decide on whether there is a deposit required, final pricing, etc...   Once we have it all ironed... 
300b lovers
As Lynn was saying above, I have spent the last year working on this 300b amp project and the matching "Raven" balanced preamp.  Spatial Audio will decide on final naming and pricing and I will help them get started on production.   The cosmetics ... 
300b lovers
@carlsbad2  Yes the Reichert amp used 6SN7 to drive 300b and though I have not heard one, those who have said it had a sonic purity that was hard to beat.  So it was a good starting point and 6SN7 driving a 300b can sound good.  But it can be impr... 
300b lovers
@charles1dad  I used the 6SN7 to drive both KT66/6L6 and KT88 in two different amps and they are great for that.  They are marginal to drive a 300b.  As @atmasphere said, there are many approaches and schools of thought about drivers.  Many paths... 
300b lovers
@gavin1977  No, I am not going to do kits... I am retiring and letting a partner build the 300b project and matching preamp.  That should be going before the end of the year.  If you make kits you have no control over how they are built and you g...