Venus MC/MM Phono Amplifier

Venus valve tube MC/MM phono amplifier

Level 3 valve tube MC/MM phono amplifier .

The main unit with power supply of 2 unit design.

Venus use CR type EQ curve design, the CR Type is good method for revive EQ curve ( not-NFB).

It uses ECC83 tube Class A and not-NFB input stage, CR type Curve EQ ( six kind Eq curve ), ECC81 and E88CC tubes Class A and not-NFB output stage

The Venus 's application of a highly efficient solid-state voltage regulator with 6X4 Tube for current regulator and R-Core ( Japan Hi-B core ) choke in the HVB+ power supply . Also it use the external power supply get highest S/N.

Features

ECC83 Class A and not-NFB input stage.
ECC81 , E88CC Class A and not-NFB output stage.
Vishay/Dale RN55, Amtrans AMRA Resistors
CR type Eq curve , not-NFB
Hasimoto HM-X MC step-up transformer.
Miflex KPCU ( Copper foil Poly/Paper in Oil) coupling cap and Philips MKP coupling cap
2 pair MC input , 2 pair MM input
Curve control with select 6 kind EQ curve
MC impedance select switch with 6 position
Mono / Stereo select
Gain select switch with 6 position gain
External power supply
R-Core ( Japan Hi-B Core ) Choke at HVB+ power supply

Mercury has a select control for select 6 kind EQ curve :
RIAA , Londo , LP , CCIR , AES , NAB .

RIAA, match 99% LP. ( 1955 after )

Londo , LP , CCIR , AES , NAB are other curve for old LP. ( 1955 before )
Please see following table , there have more infornmation.

Specifications

Controls.
Power Supply : Power On/Of .

Main Unit :
MC input impedance select , MC high/low gain , Main gain select, Eq curve select ,
Input select , Mono / Stereo .

Output : 1pair Main RCA.

Input : MC1, MC2, MM1, MM2. ( all RCA ).

Output Impedance :
2K ohms , 20K ohms minimum load.

Frequency Response: +/- 0. 25dB 20Hz to 20KHz , RIAA equalized

Input Impedance:

MC low gain:
520 ohm , 350 ohm , 200 ohm , 100ohm , 75 ohm , 50 ohm

MC high gain:
133 ohm , 90 ohm , 52 ohm , 30 ohm , 20 ohm , 10 ohm

MM is 47K / 100P

Gain:
1 is Low MC 68.5dB / High MC 74.5dB / MM 45dB ,
2 is Low MC 67.5dB / High MC 73.5dB / MM 44dB ,
3 is Low MC 66.5dB / High MC 72.5dB / MM 43dB ,
4 is Low MC 65dB / High MC 71dB / MM 41.5dB ,
5 is Low MC 63.5dB / High MC 69.5dB / MM 40dB ,
6 is Low MC 60dB / High MC 66.5dB / MM 37dB ,

EQ curve:
RIAA , Londo , LP , CCIR , AES , NAB .

Noise: MM 85dB (shorted input) , MC 81dB (shorted input).
signal-to-noise ratio, below 1 Volts RMS output, A weighted

Phase Mode : Normal

Max input : MM 70mV

Distortion: Less than 0.14% at 1V RMS 1kHz output.

Tube Compliment : ECC83 x2, ECC81 x2, E88CC x1, 6X4 x1.

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

Total Weight: 11kg

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

Actual price: HKD$20,380 one set (two unit)　

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