The match between amplifier and speaker for single-ended operation is critical, which is why John Atkinson suggested I let Wavelength's Gordon Rankin lead when it came to choosing a speaker to partner his special-edition Cardinal amplifiers. If you're not talking roughly 92dB sensitivity and a fairly benign load, say no lower than 6 ohms, you're just not talking single-ended. That precluded running the Cardinals on the big Avalon Ascents with their lowish 86dB sensitivity (in spite of the relatively benign impedance curve).

After more discussion it became evident that the best speakers to use were the very ones Gordon employed in his own reference system—the Swiss-made Reference 3A Royal Master Control loudspeakers.

What can you tell about the intrinsic sound quality of a loudspeaker if you've heard it only at an audio show? Arguably, not much. If it sounds bad, there may be a number of reasons for that, only one being the speaker itself. It may be the acoustics of the room, problems with speaker setup, poorly matched associated equipment, insufficient break-in/warm-up, or poor choice of demo recordings.

Make It Simple. . .
Ah, for the old mono days. I remember assembling my first audio systems in my early teens and as a novice—things were easy. My first amp had four RCA input jacks, each clearly labeled and corresponding to an identically labeled setting on the input selector switch. There were screw-down speaker connectors for 4, 8, and 16 ohms, and ground. Tape output was defaulted to whatever input I was listening to. The amp had but four knobs: Input Selection, Volume, Bass, and Treble. And although it would seem almost impossible to go wrong, I did exercise focus and care as I tended to my first setup.