I have a pair of Mirage OM 10 Towers that are 6 ohm and 91 db sensitivity. Should not pose a problem for any of these. Also have a pair of Castle Conway 3 Towers that are 8 ohm and at least 88 db sensitivity.@will62 None of these amps make enough power to drive speakers with efficiency as low as those in the quote. You would want 10X the power at a minimum. A Dynaco ST-70 is a good suggestion and there are many versions of that amp available.
Inexpensive Tube Amps
Anyone have any experience with the following? I want to try one just to see how the sound compares to my Yamaha and Denon solid states. Since the Denon is living on borrowed time I will likely have to replace it this year anyway. Looking at the Nubsound and noted a Germtune that is identical to the Nubsound but costs a bit more. Reviews are largely good including those on other forums.
https://www.amazon.com/dp/B00NWISSGU/?coliid=I2VYW63Z6R35ZH&colid=3O2PB0XPYIL0T&psc=0&re...
https://www.amazon.com/Nobsound-Amplifier-Single-Ended-Handcrafted-Headphone/dp/B073ZXZ3Z5/ref=pd_sb...
https://www.amazon.com/dp/B00DRUY6EG/?coliid=I1EPHIQ7T6OOPR&colid=3O2PB0XPYIL0T&psc=0&re...
https://www.amazon.com/dp/B00NWISSGU/?coliid=I2VYW63Z6R35ZH&colid=3O2PB0XPYIL0T&psc=0&re...
https://www.amazon.com/Nobsound-Amplifier-Single-Ended-Handcrafted-Headphone/dp/B073ZXZ3Z5/ref=pd_sb...
https://www.amazon.com/dp/B00DRUY6EG/?coliid=I1EPHIQ7T6OOPR&colid=3O2PB0XPYIL0T&psc=0&re...