stevemcx

Responses from stevemcx

BAT VK -200 vs. McCormack DNA 1 Deluxe?
Hi Guys,There is nothing about BAT gear that makes it incompatible with my DNA amp designs. I know of quite a few people who run this combo happily. However, the original DNA-1 and 0.5 amps have a protection circuit that monitors the output for ex... 
Why do some fine solid state amplifiers like Soulution have such low input impedance?
Hi Guys - I just saw this thread and thought that I ought to chime in to (hopefully) clear-up any potential misunderstanding. All of the McCormack DNA amplifiers except the DNA-500 and DNA-750 monoblocks have a 100kohm input impedance, and this is... 
Question on McCormack MLD preamp
Hi Tom,The Micro Line Drive (MLD) has both a passive and active signal path. Unlike the TLC-1 (with buffered unity-gain path) the MLD's active circuit is a more traditional gain stage (adjustable via internal jumpers to +6 or +12dB). If you are lo... 
The Phoenix Spatial Coherence preamp
Hi Scoville,Thanks for your feedback - I'm pleased to hear that you are enjoying the preamp. Restoring that piece was a fun project -  like seeing an old friend again. Enjoy your music and let me know if you have any questions.Best regards,Steve M... 
McCormack SMC Audio upgrades: how good are they?
Hello Audiogoners,I would prefer that my amps turn on-and-off silently but the nature of the design allows for a bit of a turn-on thump, and the amount varies somewhat from one amp to another. I find a small thump acceptable and I would never ship... 
McCormack DNA-1 rear fuse won't stay in
Sorry to hear you ran into a fit problem. I like the ACME fuseholder and I don't mind opening the hole size to fit it, but I understand this may not work for everyone. The fuseholder hole diameter on the DNA-1 is 1/2" with 2 flat sides to take adv... 
McCormack DNA-1 rear fuse won't stay in
The DNA-1 fuseholder is a "bayonet" type - push it in slightly with a blade screwdriver and rotate CCW 1/4 turn to release. Push in and rotate 1/4 turn CW to reinstall. It is possible that it might be damaged and not working properly so check it c... 
Spatial Coherence
Thanks Tony! I'm very pleased to hear that you are enjoying your restored and improved Phoenix preamp. It was a fun project to get involved with and really took me down memory lane. The TFET-Valve modules have proven to be remarkably reliable and ... 
McCormack TLC-1 loose front panel knobs
Hi Kilowat3 -The TLC-1 knobs are secured with #4-40 hex-head set screws, and you will need a .050" hex driver to tighten them. The original set screws were steel but I have now replaced them with longer Stainless Steel screws that do a better job ... 
Honest Vintage Tube Repair - SoCal
I can recommend Steve Pappin at Clifton Audio Repair. He is familiar with many brands of vintage tube and solid-state gear and is an excellent technician. He now handles my McCormack Audio repair work and does a great job.Clifton Audio Repair and ... 
Can I use my McComack TLC 1 with a headphone amp
Hello Adler_b,Your TLC-1 will work perfectly as the front-end for your headphone amp. You can use either of the main outputs which are volume-controlled, or you can use the Tape Out which is not affected by the volume control. Please note that the... 
McCormack DNA-1 Part Needed
Hello Efi,Please contact me again about this question. I have designed a new replacement main circuit board for the DNA-1 and DNA-0.5 amps which will be available soon.Best regards,Steve McCormackSMc Audio 
McCormack DNA-1 has a clank
Hi Guys,The noise is caused by different rates of thermal expansion & contraction between the steel chassis and aluminum heat sinks. It is actually caused by the hardware being too tight, so if you carefully check the hardware to see that it i... 
McCormack DNA-1 Protect Mode light glows dimly
Hi Bob,Nice to hear that you got your DNA-1 back into service and are enjoying it. The protection circuit monitors DC at the output and shuts-down the amp if it exceeds a certain level. It is possible that it was just doing its job - it may be tha... 
McCormack DNA-0.5 Protection Circuit problem?
Hi Harold,Apparently your amplifier has some internal damage and will need service. The AC Mains fuse (attached to the AC inlet) has now blown as well, but you should not attempt to use the amp again at this point - the fact that the internal fuse...