I recently acquired Line Magnetic's entry level tube integrated amp, the 34ia. At less than half the price, it ran circles around the PrimaLuna and Rogue Cronus Magnum amps I brought home for demos. At least, for the kind of music I listen to. Fairly simple push-pull design, with a 12AX7 input, two 12AU7 drivers, and four EL34 power tubes. The only upgrade I did to the stock tubes, so far, is a Brimar NOS tube in the AX7 slot. It can accept KT88's with the flip of a switch, but since I listen to small jazz combos and lot's of acoustic classical music, the EL34/KT77's are sweet. I love it.