YAQIN New MC-10T EL34B(6CA7)X4 12AT7X4 Vacuum Tube Hi-end Tube Integrated Amplifier This amp puts out some amazing sound and has more than enough power at 52 watts per side. It uses 4 EL-34's and 12AT7's. Quite heavy at over 50lbs. The output transformer adopts and imports the silicon steel sheet of audio frequency (0.35mm ) and high-quality enameled wire of high strength and winds the craft of making specially. Utilizes the audiophile capacitors and high quality metal precision resistors dedicated for audio frequency Applies special potentiometer as volume controller with low noise, and durable