Steve Guttenberg AUDIOPHILIAC is fairly impressed with the sound quality & value of this 300B Single-Ended Triode (SET) integrated amp.

Price - US$769 (Amazon, with free shipping in USA).

Or:

US$527 + shipping from China-hifi-Audio.com in China.

- Power output - 7.6wpc @ 8 / 4 ohms.
- Input sensitivity - 0.750V - ie. this is a sensitive, (3) line-input 'integrated' amp with volume control.
- PSVANE 300B output tubes + 6SN7 input/drivers + 5Z3 tube rectifier tube, all included.
- 'Auto-biased' output tubes - ie. you do not ever need to manually set/check tube bias.
- Tube cage US$20 extra.

Some of Steve's comments:

" huge, expansive soundstage "

" this amplifier isn't slow sounding or dull "

" overall... it's very engaging "

" bass.... has a weight, solidity "

Obviously, at this price level, this cannot be an allcomer-beating product, but Steve compares it not unfavourably with his (US$4k) First Watt J2 SS amp.

DarkLantern blog - darklanternforowen.wordpress.com

Speaker matching:
Steve gives a few examples, but in my experience - when I first bought a 300B amp way back then, I used it with my Spendor SP1 - which are not sensitive at ~87dB/W & I was smitten by the SE triode sound, despite the inadequate amplifier power on paper.

However, I'd suggest that 90dB/W would be a good minimum sensitivity match with 300B SE amps - depending on listening distance, listening levels, music, etc.
That way, you get decently loud levels (low 80s dB av. SPL), at moderate listening distance (3-3.5m?), with some dynamic power in reserve.

DarkLantern blog - darklanternforowen.wordpress.com

The Elekit TU-8600R comes to mind as well although it's probably a bit more expensive.

Ah yes, we discussed the Elekit TU-8600R 300B kit amp, last Nov 2019.

It is available widely now (Japan, USA, UK, EU).

DarkLantern blog - darklanternforowen.wordpress.com

See also the even more affordable - Boyuu REISONG A10 single-ended EL34 amp

DarkLantern blog - darklanternforowen.wordpress.com