poimandres
Active Member
- Joined
- Oct 2, 2018
- Messages
- 105
- Likes
- 49
Congratulations John, the A9 appears to be designed very well. Looking forward to the release and price.
6db is essentially the unity gain. It's inherent in the balanced topology. It will have double the voltage than unbalanced.+15dB on balanced is pretty high lol. But hmm, so no 0dB/unity gain for balanced in final design?
Right. Thanks for clarifying =). Can you share something about the power supply? How did you get noise so low?!6db is essentially the unity gain. It's inherent in the balanced topology. It will have double the voltage than unbalanced.
Nothing special about power supply. Mr wolf tested XLR input so no issue regarding PS noise. In terms of the overall noise, just use low value resistors and make it stable.Right. Thanks for clarifying =). Can you share something about the power supply? How did you get noise so low?!
SMPSLinear power supply or switching mode?
Considering ADI-2 DAC, THX 789/887 etc all use SMPS I see no problem with a good SMPS, as can be seen here with these stellar measurements!SMPS
Alright. Changed cable connection to minimize cable interference to the measurements. The balanced output impedance is 0.135ohm. The extra impedance must be the cable impedance from the phone out to the load.0.37R for BAL
Composite + feedback. Basically the same as everyone else.@JohnYang1997 I guess it's a little early to ask, but ... topology?
But still better. apparentlyComposite + feedback. Basically the same as everyone else.
Very nice indeed!
What is the output impedance on the line level XLRs and RCAs?