SR-007
HE60, Lambda Signature
SR-404, 4070
SR-202, Lambda Pro
HD650, HD580 (I might very well be deaf but the 2 sound virtually identical - also don't Sennheiser use the same driver and 'capsule' parts for both?)
Hello everyone! This forum feels like some sort of parallel world - all the names are familiar yet something is unsettling and different! ; p
Yes, definitely it would be a big surprise if SR-007 Mk2 is significantly less efficient - then it may even be difficult to get reasonable volume with some of the quieter single ended sources and the Stax amps.
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