Pure Class A SS vs Tube Amp

 I read somewhere that tube don’t have dynamics for movies thanks and I appreciate through KLF 30 fan

@lordrootman  What you read was misleading. Dynamics should come from the signal, not the amp. As long as the dynamic range is within the power capacity of the amp (and with your speakers this is easy to achieve) the dynamic range of either tube or solid state will be exactly the same.

Now there is a complication when dealing with dynamics! Most audiophiles use the term to describe higher ordered harmonic distortion, because those harmonics are used by the human ear to sense sound pressure. So if some are added by the amplifier, it will tend to sound more 'dynamic'. But that is really distortion masquerading as dynamics. The brightness of solid state is caused by these same harmonics. This is how tube amps tend to sound smoother- its all about distortion. The exception to this is SET amplifiers- when driven harder, they tend to make higher ordered harmonics but mostly on transients at first as the power is increased. When the loudness cues to the human ear are appearing on transients, its interpreted as 'dynamics'. But a sound pressure meter will reveal what is going on- the SET will sound louder at a lower power level than an amp with less distortion playing at a higher power level.

lordrootman,
I have not heard the KLF 30's.
I agree with charles1dad, I would not consider tubes if your intention is to have the amp in use with a homes theater set up. I was strictly thinking along the lines of a two-channel music system which is what I have.

Lord, you can't go wrong following Ralph's advice. I use separate amps for HT, all Class D Audio, built from kits. I have a separate two channel line stage with HT bypass, and a couple of other tube amps (SET 300B, and SET 845 amps) for use with my two channel system.

I very much enjoy my system, and I do, at times, run my HT system using my tube amps, and don't feel like I'm missing anything. 

Regards,
Dan




 

I liked the pairing of my KLF-30s with my Rogue Audio M-180 tubed monoblocks.  I haven't had any class A amps to compare to, but that sounded really good.

In regards to the comments about wearing out your tube amps in a dual use system, I often don't turn on the amps if I'm just watching TV.  I use my five channel amp that powers the 4 surround speakers and the center channel and just listen through the center channel.  When I do engage the M-180s for movies, there's no lack of dynamics.