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The amp arrived yesterday and I hooked it up with a Beresford 7520 DAC in the mix. I'm going to remove it to see how things sound without it. I need to do a lot more listening before I judge this amp completely. It images very well, good sound stage. I'm not positive that I like the overall sound as well as with my Adcom 535, but this is a very tentative observation.I also have a hum since installing the amp. A cheater plug did not remove it.
I'm using RCA connections. Jumpers?
Uh, resistors? I thnk I remember what those are from my Vietnam War protest days.
Wow, I didn't know about the input wiring importance. I must have gotten lucky and wired the negative to ground, properly. I received no instructions with the sds254, but did with cda224. On quick note the Holcos provide a much smoother presentation, less grain, warmer with better image depth and resolution than with my PRP resistors, and surprisingly, easily discernible. I also have some Takmans and Rikens I'll report on if any different.
From Class D:The important thing to remember is…
I do not understand this at all. The unit was built by the seller, who did use RCA cables. All I did was connect everything to the proper right/left or positive/negative.
Ok. I disconnected every thing except the preamp, amp and speakers. Hum still present. I've requested that the seller let me return the amp to him.
I have read most of this very long thread and have pulled the trigger on two SDS 224 amplifiers, large power supply and gigantic transformer. Ordered last Thursday night and it arrived today. Great service. I have read most of this very long thread, but still have couple of simple questions: On the SDS board is it necessary to install the LEDs and the on/off switch using the molex connectors or can I just leave them off for the time being? I know that the gain pots are required but not sure about the rest. ...