First Tube Amp


I have been listening to a 90's SS amp(200 wpc @ 8ohms) for 25 years and thought I would finally give a tube amp a try.

I ordered a $500-800 chinese push pull(40 wpc) integrated tube amp, with 4 El34 tubes, and  2 12AX7, and 2 12AU7 tubes. 

I figured this would introduce me to the so-called "tube-sound", perhaps an exaggerated version, that I have been reading about on this forum, then after a week of exposure, most likely return it for a full refund and decide if I want to go down the hole further with more prestigious versions.

To my surprise, I am floored by the quality of sound it produces. I wasn't expecting this at all. Initially, I thought it had some distortion of the high frequencies and a bloated low end but after 75 hours of break-in this essentially disappeared. The bass is thunderous, contrary to the limited reviews on the internet. The quiet passages are dead silent. I am hearing very different interpretations of CD's that I have listened to for years(classical) on my SS amp. Particularly when single instruments are played the sound is unbelievably sweet. Pizzicato is more forward. Part of this new experience I owe to the newly acquired speakers, which have opened up a sensitivity to recordings that I have not known to exist - I hear musician movements and breaths in the orchestra at 98.82dB 2.83V@1m .

I am struggling with returning this amp, in the midst of a paradigm shift: chinese junk has become on par with high end, how can it get better than this? What would other types of tube amps of better quality offer? How would other types of tubes("rolling") sound. How would a SET amp sound different(a 300b SET). A PL(also chinese made) with an array of tunes versus some of the boutique models that have half as many tubes?

Thanks for your help.




recluse

Showing 4 responses by recluse

  • Chuck, thanks for the reply. That was my original  plan if  I liked It. Most of these nicer amps like Carey have a hefty restocking fee which I was trying to avoid. I figured on perceiving the tube quality through defects and if I liked what I was hearing, then return. I wasn’t expecting to be blown away by the quality of sound with this cheaper product. It seems to have, if any, only small non-musical negatives of which longevity would be to me the most important .
  • Roberjermam, I will have to look into these other products. What is unique about the push pull design? Why would someone prefer this over a SET for example? Thanks
  •  Chayro, I was amazed at how much better it sounded after hours of warm- up. I didn’t mind the bias adjusting or the wait. How would you know when a tube starts to fail and how much can/does reasonable  tube rolling cost? 
Thanks 
Thanks for responding.

As someone already mentioned, speakers are 8 ohm, the DI’s, and the amp is Yaquin. Speaker cables are 6’. My room size is on the small side and I don’t particularly like to play music loud.

Roxy , which 300 b do you have?

By bloom do you mean harmonics. Atmosphere, I think I found the corresponding website ;-) how would something would sound with loss of “low-level detail” which is what happens with push pull amps. I’m guessing more “bandwidth” is more frequency response or range?

Do SET,s lose their”bandwidth” or fail only when pushed to hard/loud?


Thanks for the detailed information and suggestions. I am intrigued by these tube amps, especially the SET - however wondering if I would tolerate it's limitations - as you mentioned with large orchestras.

Many of your descriptions/positive traits of the SET seemed to parallel my impression of the push pull amp: I picked up more low level detail versus the SS amp, single instrument solos seem to stand out better in the symphonies I listened to. The distortion was overly pronounced during break-in and when it was cold - ear-catching to say the least, but finally  leveled out to a pleasing level. I wondering if all of this will be even more pronounced with an SET. I will be looking at  some that have been mentioned over and over again on the forum like CJ, Cary, PL, etc - unfortunately I will have to stay away from items that will need upgrading or soldering and the used market is non-existent where I live. 

Still trying to rationalize the decision to send back the Yaq. Been listening to it biased at 40. I noticed not all three of the cylindrical transformers where equally hot- just the one forward one of the trio. The volume adjuster is a little too sensitive. And there is no phono stage. These issues are minor as I mainly listen to CD's.

Lastly, took the chinese amp off-line and have been listening to a powerful hybrid amp(3-4 times the cost of the Yaq amp)and am not as impressed except for the strong bass, holding up very well, albeit clean and sterile, at at high volumes. It fall short on too many other levels.

Thanks again. If anyone can recommend an SET or 300b amp that works well with DI's or speakers of similar sensitivity - please chime in :-)