wgscott Posted March 27, 2016 Share Posted March 27, 2016 For pre-amps or DAC/pre that have both balanced and unbalanced output, I have noticed that a subset can do both simultaneously, while others can only do one or the other. For those that output simultaneously to unbalanced RCA and to XLR, is this done at the expense of making the XLR output unbalanced (essentially a second RCA output with different connectors)? Link to comment
Axiom05 Posted March 27, 2016 Share Posted March 27, 2016 For pre-amps or DAC/pre that have both balanced and unbalanced output, I have noticed that a subset can do both simultaneously, while others can only do one or the other. For those that output simultaneously to unbalanced RCA and to XLR, is this done at the expense of making the XLR output unbalanced (essentially a second RCA output with different connectors)? Not quite correct. This only occurs IF you actually have interconnects attached to both outputs. If you only use the balanced outputs you get the benefits of a balanced connection, but if you ALSO connect to the unbalanced outputs, then you lose the benefit of having a balanced output. This is how it was explained to me by someone at Ayre when I asked about using the unbalanced outputs for a headphone amp. Main System: [Synology DS216, Rpi-4b LMS (pCP)], Holo Audio Red, Ayre QX-5 Twenty, Ayre KX-5 Twenty, Ayre VX-5 Twenty, Revel Ultima Studio2, Iconoclast speaker cables & interconnects, RealTraps acoustic treatments Living Room: Sonore ultraRendu, Ayre QB-9DSD, Simaudio MOON 340iX, B&W 802 Diamond Link to comment
Guidof Posted March 27, 2016 Share Posted March 27, 2016 My DSPeaker AntiMode Dual Core has both kinds of outputs active simultaneously. I have no idea how the circuits operate, but the output voltage of the balanced output is about double that of the RCA, which might suggest the two operate on separate circuits. interestingly, one of the suggested connection schemes involves connecting a powered subwoofer to the RCAs and a stereo amplifier to the balanced output. That's how I have it. For my system details, please see my profile. Thank you. Link to comment
Panelhead Posted March 27, 2016 Share Posted March 27, 2016 Some have separate circuits that prevent RCA loading from effecting the balanced output. They really do have both single ended and balanced output. This is almost as good as having a four channel Dac for a system with subs. 2012 Mac Mini, i5 - 2.5 GHz, 16 GB RAM. SSD, PM/PV software, Focusrite Clarett 4Pre 4 channel interface. Daysequerra M4.0X Broadcast monitor., My_Ref Evolution rev a , Klipsch La Scala II, Blue Sky Sub 12 Clarett used as ADC for vinyl rips. Corning Optical Thunderbolt cable used to connect computer to 4Pre. Dac fed by iFi iPower and Noise Trapper isolation transformer. Link to comment
Axiom05 Posted March 27, 2016 Share Posted March 27, 2016 Some have separate circuits that prevent RCA loading from effecting the balanced output. They really do have both single ended and balanced output. This is almost as good as having a four channel Dac for a system with subs. Is there any way to determine this? I know Ayre's QB-9DSD does not work that way (unfortunately). Main System: [Synology DS216, Rpi-4b LMS (pCP)], Holo Audio Red, Ayre QX-5 Twenty, Ayre KX-5 Twenty, Ayre VX-5 Twenty, Revel Ultima Studio2, Iconoclast speaker cables & interconnects, RealTraps acoustic treatments Living Room: Sonore ultraRendu, Ayre QB-9DSD, Simaudio MOON 340iX, B&W 802 Diamond Link to comment
Panelhead Posted March 27, 2016 Share Posted March 27, 2016 The only way I know to determine this is from the manufacturer. My Dac had the output circuit details released. They included seperate circuits for performance reasons. It does give more flexibility with a minimal cost increase. 2012 Mac Mini, i5 - 2.5 GHz, 16 GB RAM. SSD, PM/PV software, Focusrite Clarett 4Pre 4 channel interface. Daysequerra M4.0X Broadcast monitor., My_Ref Evolution rev a , Klipsch La Scala II, Blue Sky Sub 12 Clarett used as ADC for vinyl rips. Corning Optical Thunderbolt cable used to connect computer to 4Pre. Dac fed by iFi iPower and Noise Trapper isolation transformer. Link to comment
Speedskater Posted March 28, 2016 Share Posted March 28, 2016 The only way I know to determine this is from the manufacturer. My Dac had the output circuit details released. They included seperate circuits for performance reasons. It does give more flexibility with a minimal cost increase. The person you contact at the manufacture, might not know or understand the engineering in this situation. Link to comment
17629 Posted March 29, 2016 Share Posted March 29, 2016 "For those that output simultaneously to unbalanced RCA and to XLR, is this done at the expense of making the XLR output unbalanced (essentially a second RCA output with different connectors)?" In most cases yes. You can tell by looking at the components specs. A fully balanced component should list 2 sets of specs. One for SE and the other for Balanced. Someone above mentioned the Ayre. Here's the specs for it as an example of what to look for. Output Level Headphone or Preamp Mode : 7.0 volts balanced, 3.5 volts single-ended DAC Mode : 4.0 volts balanced, 2.0 volts single-ended Link to comment
occamsrazor Posted March 29, 2016 Share Posted March 29, 2016 I do this with my Audiolab MDAC. There was a discussion with the designer on the pinkish media forum, and it seemed that as mentioned above it is all down to the particular circuit design. The MDAC is one (among others) with "true" balanced design I believe. Mac Mini > RME ADI-2 DAC > Hypex Ncore monoblocks > ATC SCM-11 speakers & C1 subwoofer Link to comment
Len44 Posted March 12, 2022 Share Posted March 12, 2022 So, s few years later...Anyone know how this "Simultaneous XLR and RCA output" connections works with the Aurender A30? Would the RCA connectors need to be disconnected to have true balanced output from the A30? Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now