I greatly preferred the power of the Zeus - they matched my system better, however I could see this being a matter of taste. The sound through the 150s was more upfront and a bit too lively- read bright maybe. But in the right system that could be just what is needed. There is also a difference in the feeling of effortless power that the Zeus has. It should for the difference in the price!
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Yes - I auditioned them both in my system. At the time my system was an Audio Aero CD player going directly into the power amps. The speakers are aCapella High Violons. I greatly preferred the power of the Zeus - they matched my system better, however I could see this being a matter of taste. The sound through the 150s was more upfront and a bit too lively- read bright maybe. But in the right system that could be just what is needed. There is also a difference in the feeling of effortless power that the Zeus has. It should for the difference in the price! |
I've owned the M-150s for over 10 years now. I've found tube rolling can get great results with these amps. 12ax7s, 12au7s, EI34s, Kt88s, all can make a difference.The 2 12au7s will make the least different. Mullard NOS and other 12ax7s can really tone down "brightness. I occasionally use NOS Mullard CV491s as the input tube in each amp. They are equivalent to 12AU7s. I lose a bit of gain but they sound great. Usually I use Valvos as the input tube in each amp. I have a bunch of gear. The M-150s used now are a great buy for the money. |
😂 Sometimes they've shipped their amps with tube complements that would be considered on the "bright" side of things - for example in 2010 I got a new pair of Apollos with EH KT90 and EH Gold 12AX7 and Gold 12AU7. Definitely wouldn't have been my choice, but this was easily pulled back to neutral with some tube rolls. |
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