The single ended connection between the Ref6 and H20 appear to be much more cooperative at 300 ohms / 50k ohms.
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Wow, that's a world of difference. I believe Ref 6's circuitry is optimized to normally be best from XLR outputs (whether using SE or balanced sources), but yours might just be the rare scenario where SE wins. You might ask ARC what they think of using a Jensen ISO-MAX XLR-to-RCA transformer box to potentially get the best of both worlds here. That still won't address the tube chime issue lol.
I call it the 6H30 Zing… not a worry! Enjoy the music!
Doesn’t the Ref 6 have essentially a built in attenuation? My LS 26 has low, mid, and high gain settings via the remote. I know the Ref 3 and 5 do as well. It also has the ability to choose SE and Bal connections. ARC pre’s are notoriously over driven given the range of “volume” they allow. Some actually send them in and have ARC reduce the gain in the entire pre.
@agbrace What do u mean u hear a chime ? Can u explain that chime sound you are hearing coming through the speakers? I have owned the Ref 5se , the Ref 6 and now the ref 6SE. I was using a Krell FPB 600 amp now I am using the Audio Research Ref 750s. I have NEVER heard anything but dead silence
OP/geof3 - I use a Ref3 into a Threshold S300 II, which is fairly low gain, but I've never ever, even with my old amp which had much higher gain, heard any kind of 'chime'. I've even just 'thumped' on the top cover to cause some vibration, and, silence, even with the volume at 50, which is around my normal listening position (range from 40→60).
When you say you hear a click of a relay when you turn the volume from 0 up; that's another thing that absolutely doesn't happen on my Ref3. Going from zero up, it's silent, completely, even with my ear next to it, there's nothing. Relay operation can only be heard when changing sources, never from Vol-0 up/down or anything in between, so if your makes a relay clicking sound when going off of zero, then I would do as suggested and send it to ARC for repair
And, geof3, the Ref 3 absolutely does not have a variable gain setting, as you say, either on the remote or the unit itself.
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