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

Retired Product

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.

The power transformer is TANGO transformer , made in Japan.
The output is TANGO EF-50-5 made in Japan .

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
Retired Product

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
WhatsApp: 93440168
facebook : https://www.facebook.com/AudioExperienceYSaudio/