Looking For A New Tube Integrated Amp With Very Specific Features

Tektron Audio (Italy) has a line, the TK Two Integrated, that has numerous parallel SE versions with a variety of tubes.  Not widely distributed, but good reputation.  Fezz Audio Lybra 300B, much easier to find.

As for ease of biasing, consider amps that are “cathode biased.”  This means no adjustment needed, but at the expense of not getting the most power out of the tube.  But, on the plus side, cathode biasing is generally gentler on the output tubes.  This is not necessarily something employed by cheaper amps.  Audio Note, for example uses this approach on their amps which are pricey and very nice amps.

@freediver 

As someone already mentioned, balanced inputs require double the circuitry, but the attached link provides just about everything else you want.

https://www.audioarcan.com/product-page/stereo-30-se

Scroll down when you reach the page.

I have Rogers High Fidelity 65V-1 integrated amp that I am super thrilled with to drive my Klispch Cornwalls.  It is SET, pure Class A and is also a headphone amp BUT, it does not have BALANCED inputs.  Most importantly, it is self biasing and can take EL34 and KT88 out of the box and can run either Ultralinear or Triode mode. It uses an iPAD app to control (input select, volume, Triode vs Ultralinear etc)  as there is physical remote available.  Not ideal but good enough for me.  Also, you must have a load on the speaker terminals at all time when running the amp (including using it as a headphone amp)

Roger Gibboni's products are built like a tank, in the US of A (either Massachusetts or NY) .  He doesn't do much advertising / promotions and is always under the radar but his prices are "reasonable" by high end audio standards..  I believe he is, for all practical purposes, a one man show.  

GOOD LUCK !

+1 for a Rogers High Fidelity Integrated amp. I have a bigger model in his line up ( EHF 200 Mark II) & really enjoy it. It’s built to a very high standard, sounds excellent & been trouble free for several years now.