Pure class A amplifiers = "slow" amplifiers?

Guido,

The SINE "Kosmos" custom alloy conductor's higher conductivity should relate to faster, easier flow of current or signal. Sonically, it has the vivid, liquid transparency of the Delta Sigma amps & preamps & BOW ZZ-8 CD player we are re-introducing to US market.

Re: the Delta Sigma electronics, obviously much is proprietary. The 3Mhz circuit (flat within 1db) is amazingly fast thanks to the ultra wide bandwidth. But that liquid transparency I mentioned above is so like a great OTL amp...but with strong, vice-like grip on bass dynamics and an upper end that is so airy and delicate. I've simply never heard anything as pure and powerful as the Delta Sigma...including $350k monoblocks.

During CES2008 where we introduced Delta Sigma NP Integrated and Manger's 109-AG ultimate monitor, we received numerous compliments on how lifelike piano sounded. Some people in the hallway entered thinking we had a real piano playing.

After the "North Pole" reference linestage arrives later this month, I'll post some additional comments. After hearing it in Italy, I can't wait!

Jim Ricketts/tmh audio

I have always preferred a fast, lively sound since owning a Linn LP-12 and discovering the British "PRAT" sound.

Electronics, generally speaking, with ultra-wide bandwidth will have a faster presentation for a more accurate portayal of musical transits and phase. Faster is better and conveys the musical energy far better than slower designs although some may prefer that type of sound. Remember, it's all subjective what each of us enjoy.

That said, the sound can be smooth or it can be edgy - speed has nothing to do with tonality. The Delta Sigma Italian amps & preamps we distribute are flat to 3Mhz, lightning fast with the tonal purity of a great OTL design.

So we can have speed and harmonic purity - it simply takes some searching for the special designs.

Jim Ricketts/tmh audio

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

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

Guido,

Ooops, I missed the other points although most of following is on our website.

● No plans for RMAF but will do CES (Venetian Hotel).
● Solid State
● Class AB
● All analog circuit - no digital.
● Dual Mono power supplies in stereo amps
● Separate power supply in Reference preamps
● North Pole Integrated amp has Dual Mono PS for active linestage section and Dual Mono PS for amplifier section.

● Yes, SINE "Kosmos series" technology is quite impressive. My undertanding of the technology (as noted above) is the 8-steps of alternating annealing and deep cryo + their custom alloy creates the higher conductivity.

As with many high end designs, some information is proprietary.

Thanks guys for the opportunity to discuss these designs. Feel free to contact me off board with any additional questions. I'll be adding more info & photos on our website on the Reference Linestage soon including the interior that offers some unique design attributes.

Jim Ricketts/tmh audio