Watt's are Watt's period. As for tube vs ss with concern for dynamic headroom, heh, the guy that said tubes have 3 to 6 dB more head room is quite incorrect.
Tubes DO NOT scale on the power curve as SS amps do, why? Because they are non-linear, that is they only reproduce a particular scale of harmonics, hence the "tube sound".
Tubes are only as good as two factors, the tubes in use and the PSU (given a good circut design). But then the same similarities can be said about SS gear.
Ask yourself what the holy grail of tube gear is? BASS responce- now again ask yourself why this is? Now, unless your running some very efficient speaker system, SS does a much better job of reproducing the SOURCE when one considers the speaker system, which is far more important then the amplifer (any design) by any means (given equal quality to amplification).
Try running tubes on four or two ohms at full power for a full cd or record with heavey meatal music, lol g/l, I hope you have spare tubes handy when time consumes and degradates your tubes into useless glass speakeasy's.
Point is this, the sound- good tubes sound good with efficient speakers, but they are terrible at driving low impedence loads (a highly "dynamic" loudspeaker of good design). But there is one very important thing many tube heads ignore- TRUE dynamic range, I wonder does any speaker consistantly remain at 4, 8, or 16 Ohms- EVER?
NOT!
An empty tube equates to what?
Oh and BTW, one of the premire tube gear makers told me this on the phone this very night.
Think on that.
Tubes DO NOT scale on the power curve as SS amps do, why? Because they are non-linear, that is they only reproduce a particular scale of harmonics, hence the "tube sound".
Tubes are only as good as two factors, the tubes in use and the PSU (given a good circut design). But then the same similarities can be said about SS gear.
Ask yourself what the holy grail of tube gear is? BASS responce- now again ask yourself why this is? Now, unless your running some very efficient speaker system, SS does a much better job of reproducing the SOURCE when one considers the speaker system, which is far more important then the amplifer (any design) by any means (given equal quality to amplification).
Try running tubes on four or two ohms at full power for a full cd or record with heavey meatal music, lol g/l, I hope you have spare tubes handy when time consumes and degradates your tubes into useless glass speakeasy's.
Point is this, the sound- good tubes sound good with efficient speakers, but they are terrible at driving low impedence loads (a highly "dynamic" loudspeaker of good design). But there is one very important thing many tube heads ignore- TRUE dynamic range, I wonder does any speaker consistantly remain at 4, 8, or 16 Ohms- EVER?
NOT!
An empty tube equates to what?
Oh and BTW, one of the premire tube gear makers told me this on the phone this very night.
Think on that.