- Brand: Guyatone - Model: FLIP 600F RECORDING MODEL - Speaker: Celestion equipped model This is a full-tube amplifier made by the now-defunct Tokyo Sound, featuring a 6CA7/EL34 push-pull configuration. It was the top-of-the-line model in the series, sold from 1985 to 1987, and was carefully crafted. - Vacuum tube configuration: 6CA7/EL34 x2 12AX7 x3 12AT7 x1 The original retail price was around 120,000 yen. It functions without any issues and has been overhauled. It produces superb sound. There is one modification. Originally, the amplifier was always powered on when the power cable was plugged in. A switch has been added to the back to completely turn off the power. Please consider it. Thank you for viewing.