Reference One Phono Preamplifier.


Reference grade Phono preamplifier.

The main unit with power supply of 2 unit design. 

The Reference-One use T-LCR type RIAA EQ design, the T-LCR Type is best method for revive RIAA EQ, also is highest cost design.

It uses 12AX7 ,5670(WE396A)  with JENSEN line output transformer for input stage, special made T-LCR type RIAA EQ , 5670(WE396A) with JENSEN line output transformer output stage( with XLR and RCA output).

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

The MC step up transformer use Hasimoto ( made in Japan )

Features  


The Reference One phono preamplifier has just for MM version.
It has 4 pair MM input and with out the MC step-up transformer.

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r1phmi1.jpg (115643 個位元組) r1phmi2.jpg (125206 個位元組) r1phmi3.jpg (114251 個位元組) r1phmi4.jpg (107424 個位元組) 

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Specifications

Controls.
Power Supply : Power On/Of .
Main Unit : Phase Normal / Inverse , Input MC/MM , MC Gain High/Low , MC Input 1 or 2.

Output :  1 pair Main XLR , 1pair Main RCA.

Input : MC1 input , MC2 input , MM input ( all RCA ).

Output Impedance :  
600 ohms ( XLR and RCA same ) , 600 ohms minimum load.

Frequency Response: +/- 0. 2dB 20Hz to 20KHz , RIAA equalized

Input Impedance: 
MC low gain is 12ohm ( for 7 ~ 40ohm internal Impedance of MC cartridge )
 MC high gain is 3ohm ( for 2 ~ 7ohm internal Impedance of MC cartridge )
MM is 47K / 100P ( the capacitance impedance can change by module )

Gain: MM gain 45dB, MC low gain 71dB, MC high gain 77dB

Hum and Noise: MM is 95 dB below 10mV input,  MC is 98 dB below 1mv input.

Phase Mode : Normal / Inverse.
Phono Overload: MM 800mV.

Distortion: Less than .05% at 0.5V RMS 1kHz output.
Max Output : 20V RMS output at 0.5% THD at 1kHz

Tube Compliment : 12AX7x2, 5670(WE396A)x4,  6X4 x1.

Dimension: 
Main unit , 455mm x 350mm x 120mm (W x D x H) 
Power Supply ,400mm x 310mm x 80mm (W x D x H)

Total Weight: 18kg

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

　

YS-Audio
Room1308, 13/F,BLK C,.  
Kai Tak FTY BLDG.   
99-101 King Fuk ST,.   
San Po Kong,   KLN,.
Hong Kong
Tel:(852)93440168    
E-mail : info@ys-audio.com