I am back to being nervous about tubes — vs. SS — where this thread started. I am not sure if I am up to it?The VAC 200iq that Knghifi had suggested provides automatic biasing of the output tubes, which is a feature that makes using a tube amplifier a good deal more convenient than would otherwise be the case. The Phi 200 and the Sigma integrated do not provide that feature, although the manual biasing they would require from time to time can be performed more conveniently than in a lot of other designs.
Do you think that a SS amp with a tube preamp will give me the 'sound' I am looking for? Engaging, warm, and magical? I guess I have to hear it for myself.There are always multiple paths to success in audio, including both tube power amp/solid state preamp combinations and tube preamp/solid state power amp combinations. There are also multiple paths to failure, of course. So, yes, there's no substitute for hearing it yourself.
If you do eventually have an opportunity to audition a VAC amp with your Sabrinas, per one of my comments early in the thread make a point of checking for any signs of bass weakness, treble over-emphasis, or lack of power on brief high volume low frequency dynamic peaks (such as strong bass drum beats). As I indicated earlier, while I'm a big fan of VAC products, and in general I don't consider them to have any intrinsic weaknesses, I see those things as **possibly** being consequences of the interaction between their output impedance characteristics and the specific impedance characteristics of the Sabrina. Aside from that possible concern, and provided of course that its cost is acceptable to you, I would have high confidence that you would be very happy with the 200iq.
Best regards,
-- Al