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Pure class A amplifiers = "slow" amplifiers?

Hi folks, I know this is subject of controversy. In general pure class A has been regarded as the best way in solid state amplification to get the purest sound. In my experience many pure class A solid state amplifiers (Accuphase, Pass Labs, Plinius) sound "slow" and are lacking "dynamics". Do they sound that way because they have less distortion than class A/B amplifiers, I mean sometimes a signal is so pure that one is increasing the volume adjustment knob to get a louder sound. With a very pure sound it seems like music goes slower too (= psychoacoustic phenomenon).

Chris
dazzdax
tmhaudio
99 posts
 
Guido,

Our website has information - surf over to http://www.tmhaudio.com/DeltaSigma.htm

I visited the factory last November to meet the designer is most unique in his creativity. Good guy, too! We expect the Reference "North Pole" linestage to arrive in a few weeks - also flat to 3Mhz.

I was always a tube person...until the visit to Italy and heard Delta Sigma.

Jim Ricketts/tmh audio
guidocorona
4,114 posts
 
Thank you Jim. . . did not really find the info I was looking for about underlying technology, class of operation, single ended vs symmetrically balanced, damping factor. Interesting about the Kosmos conductor. . . more conductive than Silver? What is its resistivity value at 20C? Will DS be shown at RMAF in the Fall? Thanks, G.
nilthepill
842 posts
 
Yeah, I did the same thing and could not find the Amp's topology on your website. I know you and I have talked about this, Jim, and you think highly of these amps designed by ex employee of MBL, and you might have mentioned which type Delta Amps are but it escapes my memory at this time.
kyomi_audio's avatar
kyomi_audio
59 posts
 
Symphonic Line Kraft amps are pure class A and maybe the fastest sounding solid state amps out there. It all depends on the implementation.

Dealer Disclosure
tmhaudio
99 posts
 
Guido,

The SINE "Kosmos" conductor is an alloy of metals including silver. It goes through an 8-step process that alternates annealing and deep cryo (4 each) to achieve a conductivity higher than silver (and of course copper and gold).

Extraordinary sound.

We are receiving some other models ("Coliseum II" and "Cassio") that use some of the technology in the Kosmos series including carbon powder to absorb micro vibrations and in-line RFI/EMI. Also will receive a batch of the wall outlets w/platinum plating using a ultra high grade outlet. All is deep cryoed.

I expect SINE will become a reference in power and cable products...I'm that imprressed!

Jim Ricketts/tmh audio
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