Hiss & Hum coming from my Technics SL1210

[sachu888]

Yes I read that the CNC phono is very good. It's a very standard circuit configuration with low noise modern Opamps. I have not heard one yet but it should be good . Probably will hear one sometime soon . The maximum possible S/N ratio appears to be 83dB ( without a cartridge load ) and using the LME 49720 opamp . That's pretty much what is possible . With the cartridge loaded and due to signal loss in the eq stage some reduction in the noise will take place. I guess in the high +70dB range. That's very good. If the gain of all remaining stages is done optimally it will sound quite good noise wise. Wonder if anyone used the LM4562 opamp ?

I have used variety of Opamps including LM4562. I have used the following opamps with CNC
AD823, OPA2134,OPA2132, LM4562,LME49720, LME49990 DIP as well as metal can version,THS4032,OPA1602,OPA2111, Burson Audio V5i and V6 opamps.
They all have different signature. I preferred the sq of LME49990 followed by Burson Audio V5i and THS4032

Regards
Sachin

 

[Fantastic]

I have used variety of Opamps including LM4562. I have used the following opamps with CNC
AD823, OPA2134,OPA2132, LM4562,LME49720, LME49990 DIP as well as metal can version,THS4032,OPA1602,OPA2111, Burson Audio V5i and V6 opamps.
They all have different signature. I preferred the sq of LME49990 followed by Burson Audio V5i and THS4032

Regards
Sachin

Wow, you surely keep yourself well stocked with a variety of opamps. I also keep a lot of parts for experimenting/comparison. I've slowed down the acquisition of parts because some don't get used for whatever reason and things just pile up. I don't dispose them because after a short while after disposing you need them again to check out something ! I have a new toy now to play around with . An AT LP5 turntable ! Will be comparing the factory installed internal preamp with a tube preamp which is under construction.