ขาย เพาเวอร์แอมป์หลอดวินเทจสภาพงามMARANTZ Model 9 Reissue Tube Monoblock Poweramplifiers Made in USA 🇺🇸 70watt. ไฟ 100V. เดิมๆ เสียงหวาน ฉ่ำๆ ตัวตำนานกล่าวขาน ห้าดาว สภาพเดิมๆ งามๆ มีของเดิมครบ ราคา ฿400,000 สนใจติดต่อสอบถามเพิ่มเติมได้ครับ รายละเอียดข้อมูล : Brian Wallen (July 14, 2005): Model 9 (reissue)MODEL 9 FEATURES Power output: 70 watts RMS, 140 watts peak, 40 watts RMS (Triode operation)Output connections: 4, 8 and 16 Ohms, plus 1 Ohm tap for centre speaker connectionComplete built-in instrument for self testing and balancing of driver and output tubesCircuit includes 5 screwdriver adjustments, 7 position test switch and an accurately calibrated D'Arsonval meterControls include a gain control and a phase switch for securing correct phase relation of phantom centre channel speaker fed by two amplifiersDimensions (WxHxD)mm: 391x212x266Weight: 23.0 kgTube Complement: 2x ECC88, 1x 6CG7 , 4x EL34 1x Zener Diode, 5 x silicon rectifiersMODEL 9MONO POWER AMPLIFIERThe legendary Model 9 is, even today, the most sought after power amp by audiophiles from all over the world, its sound and its technical ingenuity are both awesome. It has exceptional stability and low distortion which, when combined with its tremendous reserves of power, create the clean, airy performance known and loved by Model 9 enthusiasts. All the original features have been painstakingly recreated, using parts made by the original suppliers in line with the blueprints and specifications from when the Model 9 was first produced. The purest and earliest of all tube designs is capable of delivering truly classic valve sound. Other tubes types have followed - tetrodes and pentodes, improvements on the efficiency of the original - but that classic valve warmth, that emotional involvement, has remained the domain of the 1930s direct heated triode tube. To recreate the glory of valve sound in modern hi-fi systems, Marantz has developed the T-1 Class A amplifier. It employs triode tubes only, two legends - the 845 at the output stage and the 300B at the driver stages. Simplicity of engineering continues with transformer-coupling and non-negative feedback circuitry. It's supported by a double-layered copper-plated steel chassis and finished in solid aluminium. The T-1 is at home with today's low-noise digital sources. Balanced circuitry - accessed via an XLR-type input, and output through 8-ohm speaker terminals - cancels noise and distortion. Further purification comes with independent power supplies: a 5U4G diode tube rectifies the driver stages, while two 845 diodes (with grid and anode connected) rectify output. To generate sufficient power to drive modern low efficiency speakers with ease, interstage transformers boost signal amplification at each valve stage. The T-1's hand-picked components and solid-state technology promote reliabity. Bias circuits are adjusted automatically - so the amp achieves peak performance always - while a DC bias meter warns when tubes need replacing. Circuit protection's built-in. Micro-processor controlled circuitry prevents overload at switch on and cuts power if abnormal peaks occur. Regulated power supplies also prolong tube life.อ่านเพิ่มเติม