Scheherazade Tubes Line Preamplifier

Scheherazade is Audio Experience Level 4 line preamp.

A New Start.
It is a full new design preamplifier . The input stage use JJ E88CC gold pin tube, it provide high input impedance ( Balanced input 950k ohm, RCA input 475k ohm ) to low output impedance and true balanced input. The input stage driver the low impedance volume control , the volume go to line output amplifier stage. The line output amplifier stage use NOS Siemens EC8010 gold pin tube driver the Hashimoto line output transformer construct  Low output impedance ,Class A and Not NFB for each channel.


The Scheherazade 's application of a highly efficient solid-state voltage regulator with Thomson-CSF 6X4 Tube for current regulator in the HVB+ power supply . Also it use the external power supply get highest S/N.





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UniCrystal OCC (Ohno Continuous Cast) Copper wire and 
Gold-plated OFC copper wire  for inside interconnect cable.

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Hasimoto line output transformer

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Siemens EC8010 tube

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External power supply.

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senzd.jpg (539219 個位元組)  Review by HiFi review.



Main unit : Volume, Input gain , Input Selector, Output gain 19dB/13dB , Output XLR/RCA Selector .
Power supply : Power On/Of
Remote: Volume

Output :  Two pair XLR Main Output ( true balanced ) , Two pair RCA Main Output .

Input : Two pair XLR line input ( true balanced ) , Two pair RCA line input , One pair AV bypass input ( XLR )

Output Impedance :  52 ohm / 26 ohms ( output gain 19dB / 13dB )
Recommended load:  600 ohm / 150 ohm or greater.  ( output gain 19dB / 13dB )

Frequency Response:  20Hz ~ 60kHz +/- 0.5dB  Test at XLR input 6V , volume at about 1/3 , output 2V.

T.H.D : 
0.14%  Test at RCA input 3V , volume at about 1/3 , output 2V , 1kHz.
0.06%  Test at XLR input 6V , volume at about 1/3 , output 2V , 1kHz.

Input Impedance: 950k ohm XLR , 475k ohm RCA.

Output amplifier stage 13dB / 19dB
Input stage -4.5dB
Total: 14.5dB / 8.5dB

S/N: >111dB (0.040mv)

Channel Balance: <0.1dB(20Hz ~ 20KHz /max output)

Channel Separation: >96dB(2Hz ~ 20KHz)

Phase Mode : Normal

Max Output : 25V

Line-Stage Tubes : 2 pcs E88CC , 2 pcs EC8010 , 1pcs 6X4 .

main 430mm x 310mm x 100mm (W x D x H) , 
power supply 160mm x 135mm x 60mm (W x D x H).

Weight: Main and power supply total 9kg

Power Source: 110-127/220-240V,50/60Hz


Actual Price:  HK$19,300



Room1308, 13/F,BLK C,.  
Kai Tak FTY BLDG.   
99-101 King Fuk ST,.   
San Po Kong,   KLN,.
Hong Kong
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