I've just listened to the Martzy LP of the Mendelssohn concerto with Kletzki on Coup d'archet. First, the Etna SL (with and without mono switch engaged), then the Shelter 501 mono, then back to the Etna SL.
It wasn't even close. The stereo Etna SL has more extended highs, a more natural tone and a very sweet tonal balance. The Shelter 501 mono sounded flatter, duller and just less engaging. As a new LP, surface noise was not a factor.
The mono switch on my preamp hinted at the result, since engaging it with the Etna SL immediately removed some high frequency information and dulled the sound slightly, so the result from the mono cartridge was not really a surprise.
Of course, the Etna SL is a much better cartridge than the Shelter 501, and it is on the better of my two turntables and arms. Even allowing for this, the result was pretty clear.
Soon I will be able mount both the stereo and mono versions of the Shelter 501 on similar arms on the same turntable, and that will be a more interesting comparison. But I suspect I know what the outcome will be, at least with this particular record.
It wasn't even close. The stereo Etna SL has more extended highs, a more natural tone and a very sweet tonal balance. The Shelter 501 mono sounded flatter, duller and just less engaging. As a new LP, surface noise was not a factor.
The mono switch on my preamp hinted at the result, since engaging it with the Etna SL immediately removed some high frequency information and dulled the sound slightly, so the result from the mono cartridge was not really a surprise.
Of course, the Etna SL is a much better cartridge than the Shelter 501, and it is on the better of my two turntables and arms. Even allowing for this, the result was pretty clear.
Soon I will be able mount both the stereo and mono versions of the Shelter 501 on similar arms on the same turntable, and that will be a more interesting comparison. But I suspect I know what the outcome will be, at least with this particular record.