Signal-to-noise ratio: ≥102dB (A-weighted)
Distortion: ≤0.025% (1KHz, under normal operating conditions)
Frequency response: 20Hz-50kHz (+1/-3dB)
Channel separation: ≥75 dB
Maximum voltage gain: >40dB
Input impedance: ≤20KΩ
Output power: >85W x2 / 8Ω (RMS, THD=1%, 1KHz)
Matching impedance: 8Ω
Gain: >38dB
Total power consumption: 380W/8Ω; 500W/4Ω
Size: 444*401(436)*88(107)mm (width × depth × height)
Net weight: 10.6Kg 75 dB
The classic version of the new generation HI-FI combined amplifier, whose main circuit is derived from the advantages of the AD-66 series converged on the AD-66MKII-D.
However, whether it is the structural form of the circuit, appearance technology, sound quality, actual testing technical indicators, the convenience of machine use, the wear life of the volume potentiometer, machine heat dissipation, etc., all have been greatly improved
In addition, it has upgraded the remote control function of the machine, equipped with a refined aluminum alloy remote control that can independently adjust the gain of high and low frequencies. For those who need low frequencies, it has also added a low frequency output port, greatly enhancing the ear pleasure of low frequency enthusiasts.
The independent pre- and post-amplification circuit design allows for pure post-amplification use. With wireless Bluetooth and paired devices, it can be used wirelessly, which is convenient and further embodies the distinct HIFi flavor of the digital era.
Adjustable treble and bass
AD-66MKll-D features an automatic treble and bass adjustment function, allowing you to accurately convey your preferred music style based on your preferences or remote control settings, whether it's jazz blues or punk rock, each with its own charm. It also boasts a convenient and user-friendly EQ tuning function.
One step operation turns it into a Power Amplifier in seconds
Unplug the PREOUT-AMPIN front and rear stage pins on the power amplifier backplane, and the device instantly becomes a Power Amplifier, compatible with any Pre (including tube Pre).
SW-OUT subwoofer output
A subwoofer makes watching movies and listening to music more shocking
AD-66MKl-D comes with a subwoofer output interface, which can be turned on by connecting an active subwoofer
2.1 System Journey: Experience a stunning audio-visual feast with music and power at the same time.
Utilizing the highly acclaimed American AD1955 audio DAC chip in the HiFi field
With a sampling accuracy and quantization standard of up to 24bti/192KHz, it features independent digital filtering and D/A conversion, and its dynamic range and signal-to-noise ratio indicators can reach an impressive 126dB. By reducing the error level of digital data stream in terms of timing resolution, even ordinary CD signals obtained from DVDs can be decoded by this DAC and play back wonderful and enchanting sounds.
Super Class A independent circuit design
Experience the beauty of HIFI through sound
Input stage: Differential balanced input is adopted, and in the voltage amplification stage, both common-emitter and common-base configurations, along with a constant current source load, are utilized.
Output stage: Utilizing Class A+ biasing technology, it eliminates the switching distortion of the output tube; it also supports voltage amplification and current.
High-quality components
Electronic volume control chip NJW1194
The highly acclaimed NJW1194 chip is selected to achieve tone control and various mode switching. Due to the use of a resistive ladder electronic potentiometer, it features low offset and low output noise, and avoids the drawbacks of traditional mechanical potentiometers, such as wear and tear.
Selected Toshiba power tubes
Using the original Japanese Toshiba TTC5200/TTA1943, it exhibits excellent and balanced full-range performance, with soft and warm sound quality. The low frequencies are rich and deep, with good analytical power and control. There is no noticeable change in tone due to too little or too much current, and its high current output capability is also quite good.
Precision five-ring resistor
High-quality five-color ring resistors are selected, with five color rings indicating the resistance value. These five-ring resistors are precision resistors, with the first three rings representing numerical values and the last ring being the error color ring. They are commonly used in military, aerospace, and other fields to ensure more stable performance of power amplifiers.
High-quality customized capacitor
A specially customized electrolytic capacitor with a capacitance of up to 34700 μF is used for power supply filtering
High-quality giant toroidal transformer
A high-quality power amplifier needs to have strong dynamics to effortlessly drive speakers, while ensuring no distortion, low noise, and smooth audio output under large dynamics. A toroidal transformer with good high-frequency response, high power and dynamic headroom, low magnetic flux leakage, and low electromagnetic radiation and vibration noise is preferred.
Exquisite remote control
The exquisite frosted matte aluminum alloy remote control allows for remote adjustment of volume, switching between audio sources, and adjustment of various parameters, making the operation of the power amplifier more convenient.
Excellent panel
The pure black aluminum alloy brushed panel features exquisite brushing craftsmanship, meticulous grinding and polishing, good heat dissipation, corrosion resistance, strong hardness, and is not prone to deformation.
VFD display screen
Equipped with a VFD vacuum fluorescent dot matrix display screen, featuring turquoise subtitles, it boasts high brightness, vibrant colors, excellent weather resistance, and a long service life. The screen brightness can be adjusted, making it more energy-efficient and environmentally friendly.
Multi-function knob
The pure black multi-function knob feels delicate and covers most of the function switches of the power amplifier. It is easy to use and can be quickly mastered.
Gold-plated pure copper terminal stud
Using 24K gold-plated pure copper RCA terminals, it boasts excellent conductivity, reducing data loss and ensuring high-sensitivity signal transmission. The sound is sweet, balanced, transparent, and has high resolution.
1 SPEAKER speaker output terminals L-OUT: left channel speaker terminal R-OUT: right channel speaker terminal
2
USB Audio computer audio input terminal
3
TF card input
4
ARC audio input
5
A set of fiber optic digital inputs
6
Three sets of coaxial digital inputs
7
SW-OUT bass signal output requires an active subwoofer with a low-pass filter connected
8
If the PRE OUT line signal output is short-circuited, any signal inputted through the same core terminal of this device will have no effect.
9
When using the "AMP IN" rear power amplifier input as a pure rear power amplifier, please remove the shorting ring and input the signal at the "AMP IN" terminal.
10
CD signal input
11
DVD signal input
12
AUX signal input
13
3-pin power input terminal
