[rmkjr]

You bought 2 pairs (4 tubes) but you used only 2 tubes, for each channel?

Bought 2 pairs. Then in each channel I put 1 tube from each pair (so 2 tubes in each channel, but so they are mixed between the purchased pairs). When I put a whole matched pair into each channel, I noticed a level mismatch between left and right. When I mixed the pairs together, that went away. Probably not as ideal as a matched quad, but it has been working well since.

 

[ducnsh]

Bought 2 pairs. Then in each channel I put 1 tube from each pair (so 2 tubes in each channel, but so they are mixed between the purchased pairs). When I put a whole matched pair into each channel, I noticed a level mismatch between left and right. When I mixed the pairs together, that went away. Probably not as ideal as a matched quad, but it has been working well since.

Thanks for the explanation, are these tubes tall as the stocks?

 

[rmkjr]

Thanks for the explanation, are these tubes tall as the stocks?

Yep yep, they look exactly the same dimension-wise

 

[CADCAM]

I have the Xduoo MT-602 and just saw the Xduoo MU-602 DAC, can anyone point me in the right direction to get any info on this? Can't find anything...

 

[Winter Sky]

I have ta-20 What tubes are suitable for acoustic,vocals songs?

 

[S Crowther]

I have ta-20 What tubes are suitable for acoustic,vocals songs?

Amperex bugle boy

 

[Just85]

I have ta-20 What tubes are suitable for acoustic,vocals songs?

I have just bought Psvane 12au7-S tubes, the vocals come forward with these tubes, so I think they would be suitable for that kind of music.

 

[Just85]

Hey guys, just wanted to ask about socket savers, since they are quite recessed, how do you remove them? I am hesitating to buy ones.

 

[Winter Sky]

Amperex bugle boy

Thank You but The price is too high for me.

I have just bought Psvane 12au7-S tubes, the vocals come forward with these tubes, so I think they would be suitable for that kind of musicThan

Thank for detail, Have you listened to jj ecc802s?

 

[Just85]

Thank You but The price is too high for me.

Thank for detail, Have you listened to jj ecc802s?

No, I haven't. I have read that they should be warm and bassy, but not on par with tubes that cost twice as much. I am thinking about 12at7 tubes and maybe I will try JJ's here.

 

[Ufanco]

@Winter Sky

The TA 20 can use 12bh7/12bh7a tubes I find they sound incredible and don’t cost a fortune. Just be aware they run a little hotter so occasionally it will tigger fault protection (just turn it off and turn it back on usually fix’s the problem)

Being a larger tube the tube protecter won’t fit but felt the benefits outweighs the disadvantages. If want to stick with 12au7 the RCA cleartop is a good choice.

How much is you’re budget?

https://audiofool.reviews/tube-rolling-the-xduoo-ta-01b-ta-10-and-ta-20-12au7-amps/

 

[CADCAM]

I accidently left my MT-602 on after a quick listening session and came back into the room to shut some shades for the night and noticed it on as well as my SMSL SU-8 DAC.
Couldn't help a quick listen and was surprised to hear better more defined bass and overall it honestly seemed to sound better than ever!
It certainly seems like leaving it on for 7 to 8 hours did some good toward an overall improvement in SQ. I don't think I'm comfortable leaving the tubes on all that time in standby mode but I will increase my warmup time on this amp to maybe an hour before I start listening.
I'm still listening...

 

[Just85]

I have had TA-20 amp for several weeks now and I am using it with Meze 99 Noir and Audeze LCD-2C headphones. I absolutely love it with 99 Noir, however it feels underwhelming with LCD-2C. Is anyone using this amp with Audeze heapdhones? I am using the TA-20 with Psvane Art 12AU7-S tubes.

 

[vmiguel]

Don't ask me for technical details, but tube amps and planar headphones are normally not a good match.

 

[jonathan c]

I have had TA-20 amp for several weeks now and I am using it with Meze 99 Noir and Audeze LCD-2C headphones. I absolutely love it with 99 Noir, however it feels underwhelming with LCD-2C. Is anyone using this amp with Audeze heapdhones? I am using the TA-20 with Psvane Art 12AU7-S tubes.

What is ‘underwhelming’ about what you hear via LCD-2C? The TA-20 is a hybrid h/p/a: the 12AU7 tubes are in the preamp stage and transistors are in the output stage. The maximum output @ 32 ohms for TA-20 is 2000 mw; the recommended level for LCD-2C is 250 mw. OK, there! So …. possibly a change of tubes? ….