JAZZ 90

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Cayin is expanding its popular high-end series of tube integrated amplifiers with the exceptionally powerful Jazz 90. With two 50-watt RMS continuous power amplifiers and outstanding stability, it also drives many speakers that were previously inaccessible to tube operation. Its connectivity is state-of-the-art: With multiple analog line inputs, a built-in MM phono amplifier, a Bluetooth receiver, and a dedicated DAC, it combines classic amplifier technology with a wide range of application possibilities.

Plenty of power + outstanding stability

Cayin achieves the combination of the finest tube sound and powerful dynamics thanks to newly dimensioned, even wider-bandwidth transformers and a particularly stable push/pull circuit. Two KT88 power tubes each amplify one half-wave per channel; the Jazz 90’s special circuitry allows the pair to work particularly harmoniously together in the crossover range. The oversized output transformers ensure a stable output of two 50 watts RMS continuous power, even with loads below 4 ohms.

In addition to the four power tubes, the Jazz 90 is equipped with two 12AX7 or ECC83 input tubes and two 6SN7 driver tubes. Compared to previous designs, the power supply has also been reinforced, ensuring the Jazz 90 operates with exceptional stability, even when power is being drawn.

Technical data Jazz 90

Output power	28W + 28W (Triode) 50W + 50W (Ultralinear)
Total harmonic distortion THD	0.2% (1W, 1kHz)
Frequency response	9Hz–45kHz (±3dB, UL)
Signal-to-noise ratio	100dB (Line) 68dB (Phono MM)
Input sensitivity	300mV (Line) 3mV (Phono MM)
Input impedance	100kΩ (Line) 47kΩ (Phono)
RIAA errors	≤ ±0.25dB
Headphone output	85mW @ 32Ω
Dimensions (W × D × H)	420mm × 379mm × 215mm
Net weight	27.5kg
Max. power consumption	310W

Flexible from Bluetooth to Phono

The Cayin Jazz 90 combines a classic tube design with the flexible connection options expected from a modern amplifier. The user can choose between four inputs via IR remote control: two classic RCA line inputs and an analog input with the built-in phono amplifier. This allows for the direct connection of a turntable with an MM cartridge.

The Jazz 90 also features a modern Bluetooth receiver for direct wireless playback of digital signals. With Bluetooth 5.1 and high-quality codecs such as AAC, aptX HD, and LDAC, high quality is guaranteed even with wireless playback. The built-in ESS ES9018K2M D/A converter ensures excellent conversion characteristics and sound quality.
A full-size headphone output on the front panel drives virtually all standard headphones. An additional RCA output allows for the connection of a subwoofer.

VU meters on the front panel display the current power level of both channels and give the Jazz 90 a timeless, technical look.

Bias control and protection circuits

The Cayin Jazz 90 not only offers an excellent-sounding and stable tube amplifier circuit, it can also be adapted to various power tube types and the user’s preferences. In addition to the KT88, which comes standard, fans of “tube rolling” can also use EL34 tubes thanks to the easy switch.

When adjusting the bias voltage for each tube, the left dial indicates the ideal setting. The built-in Bias Monitoring Indicator (BMI) circuit continuously monitors the operating status of the tubes and switches the amplifier to a protect mode if any deviations occur.

The user can choose between using the power tubes in performance-optimized, highly controlled ultralinear/pentode mode or selecting the more purist triode mode for a particularly natural harmonic spectrum.
Different taps on the output transformer, with dedicated terminals for 4 or 8 ohms, allow for optimal adjustment of voltage reserves, current delivery capacity, and damping factor to suit either high- or low-impedance speakers.