A push-pull tube design and Single-ended class A designs

Thank you so much atmosphere, jond, and charles1dad.

I was looking into purchase Cary SLI-80 integrated amp for my Sonus Faber Venera 2.5 and read somewhere that Dannis Had is the founder of Cary and he designed SLI-80 was retired and now he is doing Inspire amp at reasonable price.

So I was thinking between Inspire KT-88 Fire-Bottle amp will pair with my ARC LS7 preamp or to do Cary SLI-80, which would be better for my speakers. Cary SLI-80 is a Push-Pull but Inspire is Single-ended class A.

Based on the specs of the speaker an SET is out of the question!! You would want a speaker that is at least 10db more efficient with most SETs made. The recommended minimum power is 40 watts, which is a **very very** large amount of power for an SET!

The best SETs seem to make no more than about 7-10 watts; the turly best of them make considerably less (the less power they make, the better the bandwidth, but as you can see the greater efficiency is needed in the loudspeaker).

Eddy,
Given your speakers, the Cary integrated amplifier would be a more satisfactory match. IMO  the single ended Inspire isn't powerful enough to manage your speaker's load demands. Technically this amplifier is a SEP (single end Pentode)rather than a true single ended triode (DHT). The Inspire is built with cost restrains in mind. It doesn't have premium transformers or an exceptionally stout power supply. It's a nice choice  for very easy to drive speakers however.

Thank you so much.  :)

Cary SLI-80 integrated amp would be the better choice for those Sonus Faber Venera 2.5 speakers, IMHO.

I had speakers with about the same measurements as yours, and tried one of Dennis' KT88 Fire Bottle SEP (Single Ended Pentode) amps. I really wanted to like it because it was so conveniently small, and inexpensive and I thought it would mate well with my Had designed Cary SLP-98P F1 preamp. However, it did not turn out well at all. Soundstage was very compressed sounding and rolled off sounding on highs and lows.

Dennis was very helpful, and did send me quite a few tubes to try to help open it up. In the end, nothing seemed to work. Dennis is a great guy though, and has an infectious love of this hobby. He did refund my money, so I have no qualms.

I did read of others who loved the amp, some with speakers that were even more difficult loads than mine (90 dB, 8 ohm). This is a strange hobby indeed.