Magnepan LRS power amp compatibility?

My LRS with monoblocks each 250 watts into 4 ohms sounded good, when I went with 500 watt into 4 ohm Bryston 4BSST noticed bass improvement although to be fair different room.  Your amp seems about 1/3 of what might be needed with a tube amp on these.  Call Eric @ factory he was driving them with 100 watt/channel tube amp. 

I have a vintage Dynamic 70 and LRS. It is not my main amplifier but a backup but the ST 70 offers an almost magical combination with the LRS if you drive it with a quality preamp. I know of another LRS owner who also fell in love with the combination. You will not max out the sound level capacity if thé LRS with the ST 70 but for a great majority of my listening the amp plays quite loud in a more modest sized room. The added sense of sound space is wonderfully captivating with the ST 70/LRS combination. Yes you can get better performance from more expensive and powerful amplifiers but the pairing of these two might provide you with many hours of great listening. Try both the 4 and 8 ohm tap as well as reversing wall plug polarity to find the optimal setting.

Thanks for the insight. Went with the .7's instead. I'm running them with my Bob Latino ST-70 with KT88 tubes and Aretha preamp. OMG! Absolutely amazing sound! Amp has so much current it drived the heck out of these Maggie's with ease!