The EAR 890 is a high-performance tube power amplifier designed by Tim de Paravicini under Esoteric Audio Research (EAR). Building upon the circuits of the renowned EAR 834 integrated amplifier, the 890 delivers 70 watts per channel in pure Class-A operation, utilizing eight KT90 output tubes in a parallel push-pull configuration. This design ensures sustained high-power operation with remarkable reliability.
The amplifier features both balanced (transformer-coupled) and unbalanced inputs, offering versatility to accommodate various audio sources. Separate level controls for each channel and the option for flexible mono-block operationdelivering 140 watts into a wide range of loudspeaker loadsenhance its adaptability.
Crafted with precision, the EAR 890 boasts a thick brass front panel, heavily chromed and polished to a mirror finish, reflecting EAR's commitment to luxury and durability. The amplifier's build quality and finish are to EAR's usual high standards, ensuring both aesthetic appeal and long-term reliability.
Musically, the EAR 890 excels in delivering beautifully natural midrange and treble, superb stereo imaging, and extended yet perfectly proportioned bass. This amplifier is designed for audiophiles seeking a blend of power and sonic finesse, capable of driving demanding loudspeakers with ease.
Specifications
Type: Stereo tube power amplifier (bridgeable to mono)
Output Power:
70W per channel into 8 or 16
140W in mono-block configuration
Valve Complement:
Two 6AQ8
Two 12AX7
Eight KT90
Frequency Response: 15Hz40kHz at less than 3.0% THD
Input Impedance: 55k (unbalanced or balanced)
Input Sensitivity: 1.0V
Signal-to-Noise Ratio: 92dB
Inputs:
Balanced (transformer-coupled)
Unbalanced
Outputs:
Separate level controls for each channel
Mono-block operation capability
Dimensions:
Width: 16"
Height: 7"
Depth: 16"
Weight: 60 lbs
Finish: Chrome with polished brass front panel
