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RAYSONIC SP-88 export edition VACUUM TUBE INTEGRATED AMPLIFIER with MM phono stage


Raysonic's SP-88 is considered as a one-of-a-kind integrated tube amplifier in the high-end audio market.Not only it has been featured with all the line signal inputs found in most integrated amplifier but it also has a built-in phono amplifier for turntable input. Digital audio source is pretty popular in these days and more importantly it is  acknowledged that vinyl record has made a strong comeback as well.

The power tube 7591 used in SP-88 is a small beam power tetrode, common in old hi-fi amplifiers.7591 was popular in early 1960s and was originally designed by Western Electric. Currently Sovtek makes a direct replacement,the 7591EH, It is about 3/16" larger in diameter than the original 7591A, but works and sounds very fine.


Unique MM phono input tubes amplifier.

2 pairs of 7591A output tubes operate in class AB1 design

35 watts per channel stereo output

Double C-core Audio output transformers

Superior electronic components from U.S.A.

Remote volume control.

Crafted grade brushed and anodized aluminum chassis.

Detachable power cord (IEC).


Vacuum Tubes: 12AX7 (ECC83) x 3 , 7591 power pentode x 4

Rated Power Output: 35W x 2 (RMS, 4-8ohms)

Frequency Response: 20-20,000HZ, -0.2db (1W ref pwr output)

Total Harmonic Distortion: 0.5% maximum at rated power output

Gain: 20db

Input Impedance (MM phono input): 47Kohms

Input Sensitivity (MM phono input): 5mV

Input Impedance (Line inputs): 100Kohms

Input Sensitivity (Line inputs): 250mV

Output Load Impedance: 4ohms, 8ohms

Hum & Noise (Line inputs): >96db (A-Weighted)

Hum & Noise (MM phono input): >78db (A-Weighted)

Inputs: 4 pairs (Line inputs), 1 pair (MM phono input)

Power Consumption: 193W

Dimensions: 44.5L x 31W x 21.5H (cm)