Mono Block tube amp or Stereo Tube amplifier?

Mono-blocks are able to deliver double the amount of current to your loudspeakers. If you have hungry speakers, like to listen at loud levels and require punchy bass, these may be the biggest reasons why you would want monos. Yes, monos offer a bit more separation of instruments than stereo units and you can use shorter speaker wires, but those advantages alone may not be worth moving to monos. In short, if you have less-than sensitive speakers, prefer a particular amp and like to rock the house - running those amps in mono is worth it.

BTW:
- No, watts are not watts. Think current delivery.
- Musicians like tubes because they sound better to their ears.
- Tubes are great for rock music provided you have enough current delivery.

Two monaural amps of a certain power are no different than a stereo amp of the same power for each channel. Basically you cut the chassis in half and duplicate the power supply, perhaps at a lower power level suitable for one channel.

The advantage of monoblock amps is that they can be located right next to the speakers, and for high power systems, you can pick them up without throwing your back out.

In a well designed stereo amp there is no crosstalk between channels (contrary to a common idea).

I have five monoblocks in my multichannel system.

The main advantage of a monoblock is that it does not share power supply and grounding circuits with the other channel. This can result in better bass, lower distortion (greater transparency), less crosstalk (more imaging information).

I run long interconnects and I have a balanced line system, so the interconnects are inexpensive (and 25 feet long). OTOH I keep my speaker cables as short as possible, as that allows a tube amp more definition and better bass delivery; something that is a lot harder with a stereo amp.

Monoblocks rarely draw more power, nor do they make more heat if they are the same power and class of operation as an equivalent stereo amp.

Mono block is the way to go. Check out the VAS line, warm sound, can drive almost all speakers and have great resale value as you move up to more powerful mons's.