Anyone know anything about the Trio/Kenwood "SIGMA" amplifiers? Heard one recently at a friends house and was quite taken by the performance for a 30 year old amp. Thanks in advance.
Location: Penzance
Posts: 70
I'm Hugh.
Anyone know anything about the Trio/Kenwood "SIGMA" amplifiers? Heard one recently at a friends house and was quite taken by the performance for a 30 year old amp. Thanks in advance.
I used to own one. They have a seperate set of connections for the speakers, though these are in no way speaker cables carrying current, what they actually are is a set of cables that take feedback from the speaker terminals.
Effectively it's as though there is no speaker cable in the system with the extra cables connected & the amp is connected directly to the speaker terminals.
What I seem to remember was some of the cleanest, taught bass I have had the pleasure of hearing from any stand mount loudspeakers.
I can't remember the model number, but it was about an 80W per channel amp with a nice glass cover that folded down along the bottom half of the front panel
Picked it up from a car boot sale
Bests, Mark
"We must believe in free will. We have no choice" Isaac Bashevis Singer
Similar to what DPA did then?
Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m
Yes, though the only DPA amp that I know of with the same kind of arrangement was the 70W monoblocks. As these were in effect a bridge amp it made things very easy to implement.
If it was done on others I'm unaware of the situation.
But yes, same principle
E2A:- It wasn't the DPA I was thinking of, Thanks to Nat I just realised it was a DNM
Last edited by Reid Malenfant; 30-05-2012 at 17:36.
Bests, Mark
"We must believe in free will. We have no choice" Isaac Bashevis Singer
Location: East Riding of Yorkshire these days
Posts: 4,779
I'm Shaun.
I remember owning a Trio Sigma Drive amplifier around 1983 which was around 120 Wpc. The bass control was absolutely astonishing and the sound effortless.
Location: London
Posts: 2,411
I'm Nat-andthat'swhyIdrink.
DNM also did this or had an idea to do this with a third wire as part of the feedback loop so it is seperate from the main signal.
Location: Penzance
Posts: 70
I'm Hugh.
Thanks for the feedback, much the same as I experienced. The amp was the KA-1000 with large separate power supply box