"Golden Middle" reserves the right to make changes in products
not affecting the basic technical characteristics.

All tube amplifiers have a limited warranty according technical specification
during 12 months from the date of receiving.

Series "TWIN 2000"

BLUES DHT TECHNICAL SPECIFICATIONS : Single-ended amplifier (SE) Output power raiting 8 W (8 Ohm) Tubes (one channel) : 2 x 4P1L + 300B + 5C3S / 5U4G THD = 2 % (-3 db), Input signal level = 1 V Frequency response (-3 db) : 16 - 30000 Hz "BLUES DHT" circuit diagram

SOLO TECHNICAL SPECIFICATIONS : Push-Pull amplifier (PP) Output power raiting 10 W (8 Ohm) Tubes (one channel) : 6N23P / ECC88 / 6DJ8 + 2 x 6P14P / EL84 / 6BQ5 THD = 2 % (10 W), Input signal level = 1 V Frequency response (-3 db) : 20 - 30000 Hz "SOLO" circuit diagram

PIANO TECHNICAL SPECIFICATIONS : Push-Pull amplifier (PP) Output power raiting 24 W (8 Ohm) Tubes (one channel) : 6N8S / 6SN7 + 2 x 6P3S / 6L6 (Tungsram, Svetlana) THD = 1.8 % (20 W), Input signal level = 1 V Frequency response (-3 db) : 15 - 30000 Hz "PIANO" circuit diagram "PIANO" driver circuit diagram "PIANO" power supply circuit diagram

PRIME TECHNICAL SPECIFICATIONS : Push-Pull amplifier (PP) Output power raiting 10 W (8 Ohm) Tubes (one channel) : 6N9S / 6SL7 / ECC35 + 2 x 6S4S / 6B4G THD = 1% (-3 db), Input signal level = 1,2 V Frequency response (-3db) : 16 - 22000 Hz "PRIME" circuit diagram "PRIME" power supply circuit diagram