For sale is an upgraded stereo amplifier. For details please Google "Spectron Musician 2 Stereo Times". The reviewer concluded that this amp". . .comes as close to my idea of perfection as I've yet encountered. In terms of power, dynamics, attack, control, presentation, grace, resolve, involvement and voicing, I don't know of a single amplifier, at any price, that would embarrass the Spectron Musician II. It has more successfully achieved that delicate balance between brute force and artistic expression than any amplifier I've had the pleasure of hearing. And at $3500, that makes it possibly the best value in amplification available today.