Audiophilepure

https://www.enjoythemusic.com/magazine/equipment/0326/Audio_Research_I70_DAC_MM_MC_Phono_Integrated_Vacuum_Tube_Amplifier_Review.htm

Play the track “Some Must Dream” from the Nils Lofgren Acoustic Live album directly to Audio Research’s I/70 balanced input. Wow! This is the improvement I hoped for. Now I can see deeper into the venue and with far less grit, and subsequently, elements on the immersive soundscape became far more dimensional. Listening to “Some Must Dream” at one point, I heard a (swooping) sound deep in the background. I thought that I was hearing violins in the background, but it quickly resolved into a (Moog) synth imitating the sound of strings. I was able to remotely switch from the XLR balanced input to the unbalanced RCA input from the Arcam as it played the “Some Must Dream” track.

Switching inputs using the remote control makes A/B comparisons very easy. The differences between the two inputs are almost identical. But during one brief passage, I thought I could hear a bit more openness at the higher frequencies extension when listening with the balanced XLR connection.