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Four-way integrated amp shootout: T-amp vs tube amps up to $1k - Page 2

post #16 of 27
Try using the Millet Hybrid as a preamp and a T-amp to power the speakers.

I just finished building mine and given it a few test run and boy will I not spend money on big commercial amp anymore.
post #17 of 27
I just saw this thread; thanks Ferbose!
post #18 of 27
Thread Starter 
The two things I have learned while I am tuberolling my three amps are how little correlation there is between price/reputation/expectation and actual sonic performance, and how much sonic performance depends on the amp/tube synergy. Too many myths in the tube world, and here are several I have encountered:

1. NOS 5751 is better than 12AX7.
5751 has lower gain (70%) than 12AX7. Using 5751 softens the sound but also reduces transparency. If there is excessive brightness, then 5751 may be a band-aid, IMHO. It sounds different, but not necessarily better.

2. NOS WE 2C51 is the best 2C51 tube.
WE invented 396A tube, whose specs were adopted by later 5670/2C51 tubes. It is widely said that NOS WE396A is the best in 2C51 class. Out of four 2C51 compatible tubes I tried, WE396A is the most expensive and the worst sounding (noisier and brighter), though it has rich harmonics.

3. Chinese tubes are bad.
The Shuguang 12AX7 is actually better than other modern 12AX7's I have tried (Mullard reissue, Ei, JJ). My friend also rolled a bunch of 12AX7 on his guitar amps and liked Shuguang best. Shuguang is now producing their 9th generation 12AX7. I have not seen such an effort to optimize a single tube design anywhere else. Some other Chinese tubes I tried are kind of underwhelming.

It seems to me that predicting which tube sounds better is very difficult and I would rather buy more inexpensive tubes to try than going after one or two permium priced tubes.
post #19 of 27
Anyone have any idea how the T-Amp would sound between my 0404 and HD595? If it sounds ok I feel its reasonable price will really force me to make a purchase, assuming I can find some sort of AC adapter for it.

Thanks for the thoughtful review Ferbose.
post #20 of 27
Thread Starter 
Quote:
Originally Posted by ogewo
Anyone have any idea how the T-Amp would sound between my 0404 and HD595? If it sounds ok I feel its reasonable price will really force me to make a purchase, assuming I can find some sort of AC adapter for it.

Thanks for the thoughtful review Ferbose.
It won't work unless you modify your HD595 to balanced configuration (separate L and R ground wires). T-amp's left and right ground can not be connected or huge clicks will result.
post #21 of 27
Thread Starter 

K3000 follow-up

As a follow up, I tried K3000 on Jolida, Cayin HA-1A and T-amp. This time T-amp is the winner, especially without the parallel ressitor. T-amp is excessively bright when driving K1000/K3000 (120 ohms) due to impedance mismatch, and for the excessviely dark K3000 there is good synergy. This once again demonstrates the superior resolution and bass of T-amp.
post #22 of 27
holy crap! that settles it!

i'm getting myself a T-amp!

now will someone *please* recommend me some nice smallish bookshelf speakers to go along with them? they'll be used in a small room.
post #23 of 27
Thread Starter 
For a really inexpensive bookshelf, I recommend Athena AS-B1, now on sale:
http://www6.head-fi.org/forums/showthread.php?t=127614

Other good bookshelf speaker brands I can think of are Ascend, Axiom, Mirage and NHT. Paradigms sound too bright to my ears and probably won't match well with T-amp.
post #24 of 27
i wonder what a t-amp would sound like with a stax SRD-7 energizer?
post #25 of 27
Quote:
Originally Posted by Jahn
i wonder what a t-amp would sound like with a stax SRD-7 energizer?
when do you want to find out?

and my T-Amp powers Athen AS-B1 pretty well.
post #26 of 27
Quote:
Originally Posted by MrSlacker
when do you want to find out?

and my T-Amp powers Athen AS-B1 pretty well.
well danny has a srd-7 so if you bring the t-amp to the next meet we can check it out!
post #27 of 27
Quote:
Originally Posted by Jahn
well danny has a srd-7 so if you bring the t-amp to the next meet we can check it out!
call it a done deal! and may be if someone else *cough* lan *cough* wants to get one and mod it, we could do a T-Amp shoot out. Mine is 100% stock and powered by RadioShack AC adaptor. I think T-Amp is a great amp for the price, but i wish it would come in a nicer case with less plastic.
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