SONATAS - Plus  50W+50W Stereo Valve Tube Power Amplifier



Audio Experience SONATAS - Plus  is a 50W + 50W Stereo Valve Tube Power Amplifier.
 
It uses one matched pair of EH6550A power tubes and UL working status to provide RMS 50W adequate output for most of the Hi-End Speakers to ideal performance. Moreover, It use the high quality output transformer ( TANGO . made in Japan).
Huge dynamic range, both the beautiful tone color and wonderful rhythm , ultra linear circuit of the valve tubs power amplifier designed for the DVD - Audio and SACD source in the New Century. uncanny natural flowing heart-stirring sound that matches any other ultra-Fi products on the market .

Features

   The input stage is 12AT7 SRPP direct coupling to 12AU7 driver stage , The driver stage use high quality capacitors to 6550A power tube , The 6550 work at P-P UL mode to driver TANGO FE-50-5 high quality output transformer , The FE-50-5 output transformer has very low Insertion Loss 0.31dB only.  ( Many tube power amplifier in Hi-End audio market , Their have the output transformers is over 1dB Insertion Loss . only about 10% very high price tube amplifier use under 1dB Insertion Loss of output transformer ) . The output transformer has low insertion loss is very important , the best of the best is 0 dB Insertion Loss , The output transformers for High End tube amplifier need under 1dB  Insertion Loss . The Insertion Loss over 1.5dB output transformer will lost many low level music.

   The bias adjust of power tube is very easy , all bias test point and bias adjust at top of amplifier , you not need open the amplifier for adjust the power tube bias.

   The components ,  NFB value , tube type , circuit all select by listen test.

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Specifications

Output :  RMS 50W , MAX 70W  x2.

Input :  RCA 

Input Impedance :  100K ohm

Frequency Response at 40W:  20Hz ~ 20K Hz ( +/- 0dB )    ,   20Hz ~ 100K Hz ( -1dB )

Input Sensitivity :  1.4V / 50W

Output impedance : 4 ohm / 8 ohm                                          It can order  6 ohm and 16 ohm output .

S/N: >100dB
Damping factor : approximately over 18

Phase Mode : Normal

Tubes Required: One Matched pair 6550  Power Output , ( 1 ) 12AU7 Driver , ( 1 )12AT7 Input .

Dimension: 430mm x 300mm x 160mm (W x D x H) each

Total Weight: 20kg

Power Source: 110-117 or 220-240V,50/60Hz

 Actual Price: HK$17,000

 

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 
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