Which high power SET

hifiharv ;
Any suggestions on that PSE suggestion ?
Feel free to PM me , if you wish .

I'll bet a dollar sounds real sells the brand he recommends (and didn't disclose it.)

I hate to pop your bubble but OTOH, I will probably save you a lot of heartache too so:

The Harbeth is a revealing speaker but not particularly efficient. Its efficiency (and efficiency matters more to tube amps than sensitivity FWIW) is low- only about 85 db. For those that think it is higher keep in mind that Harbeth rates in sensitivity and the impedance of the speaker is 6 ohms. When you do the math 85 db is about right.

You will find that you are better off with a push pull amp that can make some power. There are several reasons for this, not the least of which is that the more powerful the SET is, also the less bandwidth it has. In this case any 20-30 watt amp is going to fall on its face right away.

To take advantage of an SET's characteristics (low distortion at lower power levels) you really do need some efficiency, at least 10 db higher than what you have for the amps mentioned. The only caveat here is if you plan to listen in a small room and in the near-field. Otherwise, seek a 100-200-watt amplifier for the average American listening room.

Edoit,
Atmasphere makes a good point and his reasoning is sound. However if there's any chance you can hear one of those premium SET amplifiers with the speaker, please do so. From personal experience I can say that expectations aren't always reality. Those are "very good" SETs on your wish list. Depending on your taste, music genre,room size and listening volume they could be just what you want.Compare them to a higher powered(pentode tubed) push pull amp and decide. You may be pleasantly surprised by what you hear.DHT tubes are capable of producing beautiful natural sound.
Good Luck,
Charles,

I'm using a push pull 30W and it's more than enough for my listening tastes. Hence the thought of SET for more refinement. To rephrase my question, which of the 3 on the list would be the best match for shindo masseto pre amp?