Low gain dac!

Not a cheap solution but one that will solve your problem with no sonic penalties. 

http://www.thehornshoppe.com/the_truth_pre_amp.html

Thanks for all the replies, a question to George, Charles and others, if I move the Belles to an other system and were to get me an other power amp, preferably class A or heavily biased into class A, what would you guys recommend ?
Your suggestions would be appreciated.

gryphongryph OP
what would you guys recommend ?

If your asking up to 50w Class-A only

There’s not much around that is just 30w Class-A
Pass Labs XA30 or XA25 https://www.passlabs.com/products/xa30.8/
My pick would be a Gryphon Essence https://gryphon-audio.dk/shop/power-amplifiers/essence-power/

Then if you want high biased Class-A and big A/B wattage
Parasond John Curl Halo JC5 https://parasound.com/jc5.php
Gryphon Integrated Diablo 120 or 300 https://gryphon-audio.dk/shop/integrated-amplifiers/gryphon-diablo-300-integrated-amplifier/

Cheers George

Hi @gryphongryph,
Solid state, Valvet Audio A4 mono blocks. Pure class A 55watt into 8 ohms/90 w at 4 ohms.

Tube, Line Magnetic 805ia class A SET 48 watts.
Both of these amplifiers would in my opinion easily drive your 8 ohm impedance speakers. Caution, if your listening space is modest the 805 tube will generate heat.

Either will contribute to providing beautiful sound quality given the make up of your Audio system. . I believe that the Gryphon recommendation from George is a good option as well.
P.S.
Luxman 590 AX MK II pure class A. Intergrated but I believe that the preamplifier section can be bypassed.
Charles

Chord Qutest has variable line level output that can be set at 1v, 2v or 3v. If you can use single ended connections only it’s a pretty good DAC.