Anyone experienced the Luxman MQ-300 or/and The Air Tight ATM-300R?

thanks! I am in Brooklyn so I might check on it :)

Joining this late, but...I bought the MQ-300 last September, and with my Luxman C-900u preamp and D-06 SACD player with Tannoy Stirling GR speakers in my tiny Japanese condo, I have to say it sounds pretty sweet. The vocals are to die for. I put on the Tony Bennett/Bill Evans album, and man, I swear Tony was in the room. The 300B Takatsuki tubes are really extraordinary--but boy, they will be expensive to replace when they finally give up the ghost.

I went for Luxman since I live in Japan, so the price is lower, and domestically at least, their customer service is excellent. 

Great thread.  Not surprised the Luxman works and sounds great in the room.  I have a very inefficient speaker in a 11 x 12 room and run two amps, a 2a3 push pull 12 watts and a 7 watt integrated .  The 2a3 sounds like a muscle amp and the el84 integrated sounds sweet but runs out of juice at high volume.  Both sound incredible.

@h_bomb 
Please do let me know if you ever get a chance to audition the Engstrom Arne. Would love to hear your opinion of it vs the MQ-300.

I found it better than MQ-300 in some respects but the MQ-300 to be a better all round performer.

But the catch was that the Arne I auditioned was not broken in. It was brand new from the box, perhaps that's why it wasn't as relaxed as the Luxman. But I don't know.

No matter how good the Engsrom Arne sounds "brand new from the box".  IMO there’s no question that it will improve as hours of use begin to accumulate . It will most certainly relax and open up . This has been my experience with new amplifiers and especially those utilizing output transformers.

I suspect that both of these amplifiers are outstanding across the spectrum. The Engstrom representing uber level 300b sound quality in push pull configuration and the Luxman doing the same in SET configuration. I don’t see how one could not be absolutely thrilled with either driving an appropriately chosen speaker.
Charles