This tube integrated amplifier is nearly flawless. It works like new and has a matched set of Mullard EL34 power tubes from the Tube Store with low hours. It puts out about 30 watts per channel with the EL34's but can be upgraded to KT88s for more power if desired, no bias adjustments required. PrimaLunas are well known for being the no fuss tube option. Sound quality is excellent and strong.