Cayin MT-50MK2 KT88 Hi-Fi Integrated Vacuum Tube Amplifier Bluetooth TR:22W*2 / UL 40*2
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The Cayin MT-50MK2 is a Bluetooth-enabled integrated vacuum tube amplifier. It supports Bluetooth 5.3 connectivity and utilizes two KT88 vacuum tubes per channel for power amplification. Positioned as an audiophile-grade home tube amplifier, it is well-suited for driving bookshelf speakers or small-to-medium-sized floorstanding speakers.
Core Configuration:
Vacuum Tube Complement: Features an RCA 22DE4 rectifier tube (with an independent power supply), an NS GE 5BK7A tube for voltage amplification, and two KT88 tubes per channel for power amplification in a push-pull configuration.
Bluetooth Functionality: Supports Bluetooth 5.3 (9296 protocol), allowing for direct music playback from smartphones or digital audio players without the need for additional cables.
Wired Inputs: Equipped with three sets of RCA inputs, enabling the connection of multiple audio sources, selectable via a front-panel knob.
Sound Characteristics:
Dual Operating Modes: The triode mode is ideal for nuanced vocals and string instruments, while the ultra-linear mode is better suited for large-scale orchestral music, offering greater dynamics and authority.
Sonic Profile: The manufacturer highlights a rich, mellow midrange for vocals, detailed reproduction of classical music, and excellent clarity and layering, even at lower listening volumes.
Technical Specifications:
Rated Output Power:
TR: 22W + 22W (RMS, Triode mode)
UL: 40W + 40W (RMS, Ultra-linear mode)
Frequency Response: 8Hz – 70kHz (-3dB)
Total Harmonic Distortion (THD): 0.2% (1W/1kHz; ≤5% at rated output power)
Signal-to-Noise Ratio (SNR): 100dB (A-weighted)
Input Sensitivity: 380mV
Input Impedance: 100kΩ
Output Impedance: 4Ω, 8Ω
Input Terminals: LINE1, LINE2, LINE3, Bluetooth
Dimensions (W x D x H): 360mm x 331mm x 184.5mm
Vacuum Tubes: 6JC6 x2, 12AU7/ECC82 x2, KT88 x4
Net Weight: 17kg
Power Consumption: 270W (MAX); 155W (MIN)
Bluetooth Version: V5.1
Bluetooth Chipset: QCC5125
Audio Transmission Formats: LDAC, aptX HD, aptX LL, aptX, AAC, MP3, SBC
Effective Range: ≤10 meters
Device Name: Cayin HD BT