Which 300b amplifier for Devore O/96

Atmasphere 5-15-2019
The O/96 is a great speaker; 2dB less efficient than my Classic Audio Loudspeakers.

Ralph, if I recall correctly your speakers are 98 db/1 watt/1 meter, and the O/96 is indeed spec’d 2 db less than that, at 96 db. However John Atkinson’s measurements in Stereophile showed the O/96 to have a sensitivity of only 91 db/2.83 volts/1 meter. For its 10 ohm nominal impedance that would correspond to about 92 db/1 watt/1 meter.

Which would seem to give further credence to your (and JSautter’s) advocacy of more power than most SETs can provide.

Essrand 5-15-2019
I feel like my Coincidents were powerful enough. But now you are making me doubt that. Will put those amps back in, listen more and get back.

To state a fairly obvious point, I would just suggest that you make a point of including recordings having particularly wide dynamic range in your assessment. Such as many recordings of classical symphonic music, if you listen to that type of music. For a given average volume, recordings of music having narrow dynamic range and/or recordings that have been engineered with a lot of dynamic compression are of course less likely to reveal the issues Ralph and JSautter have referred to.

Good luck. Regards,

-- Al

How about the Line Magnetic 508i or 805i. Both seem to have enough power, uses the 300 tubes and are a SET. Only reason I mention it is the fact I have the push/pull 216i and it is a stellar amp. Not in your 5 amp list, but seems you are exploring options...

My recommendation to OP.

Get the NOS Wes 300B (6k$ or more) made before 1960, then Coincident Frankenstein will be alive again.

Or you can get Line Magnetic 508 or 805, then you have lot of room for tube rolling.

After tube rolling, LM amp sounds very  close to Silbatone 300B SET which will blow up Nagra.

To state a fairly obvious point, I would just suggest that you make a point of including recordings having particularly wide dynamic range in your assessment. Such as many recordings of classical symphonic music, if you listen to that type of music. For a given average volume, recordings of music having narrow dynamic range and/or recordings that have been engineered with a lot of dynamic compression are of course less likely to reveal the issues Ralph and JSautter have referred to

:)  OK. These are all on LP.

Wagner Gutterdämmerung, London, Solti conducting, final scene (Immolation scene)Verdi Requiem Soria Series RCA, side 1 track 2 Dies Irae
Black Sabbath 'Paranoid' German white Vertigo press, side 1 track 1.Canto General America Insurrecta Atma-Sphere 3-001
Play any of these anywhere near a satisfying volume and that power problem is easily revealed.

ESSRAND,

Perhaps these previous posts supplied all the information you wanted.
If not, one other source you might want to engage in a mind-meld with Glen at Tubeaudio.com He sells Devore, Line Magnetic, Nagra, Shindo, Leben, Innous, Odin and many others. Ten minutes with Glen or Bill and
you can sh-t can most the above.