gdhall and 123running, RE whether the ERC-3 is fully balanced or not, have you taken a look at the internal pics? Does the circuitry around the XLR inputs give you any better indication?
pics here: https://emotiva.com/products/sources/erc-3
Emotiva ERC-3 or Music Hall C-DAC15.3 / connections?
Thanks to everyone for your thoughts. gdhall and 123running, RE whether the ERC-3 is fully balanced or not, have you taken a look at the internal pics? Does the circuitry around the XLR inputs give you any better indication? pics here: https://emotiva.com/products/sources/erc-3 |
@kfoxian, Yes, I have looked at the internals. Pictures cannot provide any answers in this regard. Only a schematic and knowledge of electronics can. Regardless of whether or not the ERC-3 is fully balanced is not entirely the point though. It does have balanced connectivity and that does provide greater all around capability (noise reduction and higher output gain) relative to RCA. It's a great CD player at a very reasonable price point. |
Based on work I have done with the XDA-2 DAC, I would say that the output buffer of the ERC-3 is fully balanced. However, it is difficult to say for sure if it is fully balanced from the DAC chip and I/V stages. https://emotiva.com/sites/default/files/styles/product_very_large/public/ERC3_TOP.png?itok=cjgxjTHQ There are four op amps right next to the AD1955 DAC chip, so it could very well be fully balanced through the I/V and low pass filter stages. Emotiva likes to use OPA2134 op amps. These are somewhat laid back with a warm full sound, but definitely not as high-resolution as other op amps, such as the bipolar op amps (i.e. OPA1612 or AD797). |
@auxinput please, could you have a look at the Music Hall’s internal and give your opinion? http://musichallaudio.com/wp-content/uploads/2013/07/music-hall-cdac15-3-inside.jpg btw, you can’t see it , but the CD drive controller board is positioned underneath the drive EDIT: the pic here is better, allows a focused zoom http://www.audioadvisor.com/prodinfo.asp?number=MHCDAC153 |