Considering A 20-40 Watt Stereo SET Amp

True SETs (single-ended triode) amps cannot do 20-40 watts unless they’re big transmitter tubes such as the 211 or 845 and they use over 1,100 volts. An SEP (single ended pentode), running in ultra-linear or triode mode can get 20 watts per channel however. A good example is at the link below and can be driven directly from a DAC, CDP, etc. Volume control can be added as can additional inputs for right around your budget:

https://aricaudio.com/products.php?product=SPRKT88120

Prices are not higher for what you get, considering prices for an Audio Note 211 amplifier start at $20k, Air Tight's 211 is $10K, Thomas Mayer's is $27K, and my Super 211 SET is $11,800- so comparable in price. Since a 300B is incapable of 20-40 watts, and 2A3 has even less power, 45 half that, this basically leaves pentode/tetrode single-ended amplifiers for the kind of power you’re looking for unless you go push-pull.

Best regards, Aric

@aricaudio,

Thank you for your response but I need an integrated amp. I’m looking for something with 3 line level inputs and a one pre output for my subwoofer.  Do you have something similar?

@stereo5 You're welcome, and thank you as well. Yes, as I had mentioned above the Super KT88/120 can be outfitted with additional inputs and a volume control and when used with 6SL7 Input tubes, can be driven to full output directly from a source. I can add a set of RCA line level outputs as well to allow driving a powered subwoofer. I'm not sure if you need remote capability for volume as well? If you'd like, please contact me using the Contact Us (through my website) and let me know what options/features you may like and I can try my best to help. 

Best regards Aric

If you want to seriously check out SET amps… consider a SET headphone amp. You do not need the power you need for your speakers. You can check out the sound and decide if this is the direction you want to go. There are other ways of getting more power and midrange bloom in a main system if you decide this is the way you want to go.

Typically you can put together an equivalent system at 1/10th the cost on a headphone system to test the concept. I assembled an incredible 300B headphone system for $15K while my equivalent sounding main system cost about $150K.

As others have said, the SET option at your power and price requirements doesn't exist (Aric will come in much higher in price by the time they create a customized integrated for you more than likely), why not a Prima Luna and call it a day?