ELISE Stereo single end 520B/300Bxls

Since we had gone back to less power single ended output designs for all the right reasons, we now had to search for more power from our single end designs.

The answer hence was in the new valve 520 b or the equivalent 300Bxls type@16 watts.

“Musicality” is sometimes used as an excuse for shortcomings in detail retrieval and dynamic’s, this amp has both, the ELISE excels in these and other areas.

Again like the Diavolo same topology but with solid state high current power supply incorporating 2 pye filters and a choke filter for left and right channels.  

Also fitted our unique Sentry Circuit.

16 watts Triode with split bobbin multi section output transformers 4 and 8 ohm taps, 0 feedback speaker 89 db and above required for best results.

Specifications:-

TYPE:  SINGLE END  520B                  

POWER:  18 WATTS     

FREQUENCY  RESPONSE @1WATT:  10 HZ TO 20 K  + – 0.5 db

FREQUENCY RESPONSE @FULL POWER:  20 HZ TO 20 K + – 1.1db

INPUT SENSITIVITY:  450 mv

INPUT IMPEADANCE:  220 KΩ 

OUTPUT IMPEADANCE:    4Ω AND 8Ω                                      

NOISE AT  SPEAKER TERMINALS:   TYPICALLY 1.5 mv typl.

FEEDBACK: 0 dB

BIASING:  AUTOMATIC (ELECTRONIC)

CONSTRUCTION:  HYBRID PCB / HARD WIRE

COMPONENTS:  RESISTORS 1%  METAL OXIDE , CAPACITORS LOW INDUCTANCE LOW ESR, COUPLING CAPS HOVLAND

TRANSFORMERS:  MULTI SECTION SPLIT BOBBIN

RECTIFIER:  SOLID STATE WITH A SERIES VALVE DELAY

DRIVERS:  6922 AND 12 BH7

HEATERS:  DC REGULATED

SET UP:  NO SET UP REQUIRED PLUG AND PLAY,  NO MATCHING ON POWER VALVES,  MATCHING REQUIRED ON DRIVERS

SENTRY CIRCUIT:  THE UNIT IS FITTED WITH OUR CURRENT MONITOR CIRCUIT.  THIS PROVIDES  AMP PROTECTION AGAINST VALVE FAULTS, WITH A 40 SECOND HT DELAY ON SWITCH ON.

SIZE: 18 inches wide, 14 inches deep, 9 inch high  

WEIGHTt: 30 kg