Cayin M-845D Hi-end Top Class Reference Mono Vacuum Tube Amplifier 300B Push 845 Class A Push-pull Power Amplifier (Pair)

1. Cayin had been producing high quality, high value vacuum tube amplifier over the years, following the same tradition, and now 0043ayin introduces the new reference M-845D Amplifier. This newly improved amplifier is equipped with multiple feedback selection to accommodate most pre-amplifier for effortless integration.
2. The M-845D sounds big, muscular and strong with real life presentation, beautiful decay and dimensional ease. There is a remarkable degree of detailed emotional intensity. With its power reserve that allows to drive hard driven speaker which generates a wide and deep soundstage and stable imaging, natural ability to convey the music.
3. Match Cayin M-845i Monoblock with M-11LS pre-amp for seamless integration.

• Pure bile and pure hand-made, the whole machine adopts scaffolding welding
• Use high-quality broadband response EI output transformer and drive transformer
• Use the ring power transformer specially developed for this machine
• A 6SN7 vacuum tube is used as the pre-regulated power supply
• The voltage amplifier stage uses two Full music ceramic gold foot 6SN7 vacuum tubes
• The push level uses Full music ceramic gold foot 300B vacuum tube for single-ended Class A amplification, and cooperates with high-quality push transformer to drive 845 vacuum tube for push-pull Class A power amplification
• Provide NFB. Negative feedback selection function. NFB.-0dB; NFB.-2dB; NFB.-3dB; NFB.-4dB; NFB.-5dB working mode, users can adjust the suitable gear according to the needs of the sound system and listening environment to meet the requirements
• External 845 vacuum tube current adjustment (BIAS ADJUSTMENT), monitoring table (BIAS) and hum adjustment (HUM BALANCE) function
• With BLANCE, RCA input function
• The high-end components used in this machine include: German WBT high-end speaker terminals; American Multicap coupling capacitors; Japanese Takman carbon film fever grade resistors
• The use of high-grade gold-plated ceramic tube seats improves the reliability of the connection
• With high and low voltage delay power supply function and filament preheating function, extend the life of vacuum tube
• Thick silver-plated signal wire and connecting wire
• Pull-out type high-grade aluminum alloy vacuum tube protective cover for easy installation

SPECIFICATION
Model: M-845D
Power Output: 60W
Frequency Response: 15Hz～28kHz (-3dB)
THD: 0.3%(1W/1kHz;5% Under Rated Power)
Supply Voltage: ～220V±5%    50Hz 
Power Consumption: <380w
S/N Ratio: 89dB
Sensitivity: RCA:750mV; BALANCE:1500mV
Dimension: 480mm×577mm×252mm(W×D×H)
Net Weight: 50kg
Output Impedance: 4Ω，8Ω，16Ω
Input Impedance: 100KΩ
Tube: 845×2、300B×1、6SN7×3
Input Terminals: BALANCE；RCA
NFB. Selection : 0dB，-2dB，-3dB，-4dB，-5dB