George, for the sake of those who don't want to sift through all the technical particulars and for this thread, what are the salient features of your design? George, as a resister, how does the optocoupler compare to a fixed 1% metal film Roederstein or Vishay in terms of noise?
The actual history behind this device is interesting (and George, correct me if I a wrong). Solar cells that changed resistance with light were developed in the 50s. Audio Amateur articles mentioned the use of these cells in a compressor circuit. Audio Directions ran an article in about '75 about a dynamic range expander based on the optocoupler. This so-called optocoupler was apparently adapted from radio station and recording opto compressors.
Pubul57, so you owned the ARS twice? I was looking at pics of it recently, and it looks like the level of fit and finish is high. I was also looking at the JE Monoblocks and pre further down the road if I had stuck with the Merlins.
Tony, I agree that blinded sessions can be a mixed bag if not set up correctly. In light of the LSAs requirements, it would be easy to tilt things towards an active in a shootout. That being said, it would be fun and informative.
In terms of the VRE-1 and Concert Fidelity, I was simply quoting TVAD from your review/thread of the LSA. I was not aware of these technical specifics. I would be helpful for him to chime in.
Dale is indeed using the CF piece. I believe Hajime Sato has admired Dale's Essence pre-amp designs and speakers. I did not know there was a relationship there. Dale is supposed to have some crazy new speaker at RMAF. TBD....I wish I was going.
The actual history behind this device is interesting (and George, correct me if I a wrong). Solar cells that changed resistance with light were developed in the 50s. Audio Amateur articles mentioned the use of these cells in a compressor circuit. Audio Directions ran an article in about '75 about a dynamic range expander based on the optocoupler. This so-called optocoupler was apparently adapted from radio station and recording opto compressors.
Pubul57, so you owned the ARS twice? I was looking at pics of it recently, and it looks like the level of fit and finish is high. I was also looking at the JE Monoblocks and pre further down the road if I had stuck with the Merlins.
Tony, I agree that blinded sessions can be a mixed bag if not set up correctly. In light of the LSAs requirements, it would be easy to tilt things towards an active in a shootout. That being said, it would be fun and informative.
In terms of the VRE-1 and Concert Fidelity, I was simply quoting TVAD from your review/thread of the LSA. I was not aware of these technical specifics. I would be helpful for him to chime in.
Dale is indeed using the CF piece. I believe Hajime Sato has admired Dale's Essence pre-amp designs and speakers. I did not know there was a relationship there. Dale is supposed to have some crazy new speaker at RMAF. TBD....I wish I was going.