AVALON VT737 PREAMPS - SUPERB CONDITION
[PRICED PER UNIT - 2 AVAILABLE AT TIME OF LISTING]
Listing last update on August 27, 2008 - Viewed 135 times

AVALON VT737SP (YOM: ?) (S#: 23311 & 23380) SUPERB (8-9)

FEATURES: AVALON VT-737SP CHANNEL STRIP AT A GLANCE:

CLASSSS A PREAMP DESIGN WITH THREE INPUT SELECTIONS

OPTO-COMPRESSOR WITH MINIMUM SIGNAL PATH

SWEEPABLE EQ AND HARDWIRED BYPASS


CLASS A PREAMP DESIGN WITH THREE INPUT SELECTIONS

THE VT-737SP HAS THREE INPUT SELECTIONS: FIRST, IT FEATURES A HIGHER-PERFORMANCE MICROPHONE INPUT TRANSFORMER WITH 48-VOLT PHANTOM SELECTION. SECOND, THE VT-737SP OFFERS AN INSTRUMENT DI HIGH-SOURCE INPUT WITH A JACK LOCATED ON FRONT PANEL. FINALLY, THE VT-737SP INCLUDES A BALANCED LINE INPUT WITH DISCRETE HIGH-LEVEL CLASS A CIRCUITRY. THE CLASS A PREAMPLIFIER UTILIZES TWO CASCADED, DUAL VACUUM TUBE TRIODES CONFIGURED WITH MINIMUM NEGATIVE FEEDBACK. A HIGH-GAIN SWITCH BOOSTS THE OVERALL GAIN OF THE PREAMPLIFIER. THE FOUR HIGH-QUALITY TUBES ARE CONFIGURED AS SINGLED-ENDED ANODE COUPLED FOLLOWERS. A PASSIVE/VARIABLE HIGH-PASS FILTER AND HARDWIRED RELAY BYPASS COMPLETES THE VT-737SP'S INPUT SIGNAL CONDITIONING. A PHASE REVERSE RELAY IS AVAILABLE ON ALL THREE INPUTS.


OPTO-COMPRESSOR WITH MINIMUM SIGNAL PATH

THE VT-737SP'S OPTO-COMPRESSOR FEATURES A MINIMUM SIGNAL PATH DESIGN WITH TWIN CLASS A VACUUM TUBE TRIODES FOR GAIN MATCHING. THE OPTICAL ATTENUATOR ACTS AS A SIMPLE PASSIVE LEVEL CONTROLLER. FULL DYNAMIC CONTROL FROM SOFT COMPRESSION TO HARD- KNEE LIMITING CAN BE ACHIEVED WITH THRESHOLD, RATIO-COMPRESSION, ATTACK AND RELEASE CONTROLS PLUS GAIN REDUCTION SELECTION ON THE LARGE VU METER. SPECIAL SPECTRAL CONTROL INCLUDING DE-ESS IS AVAILABLE WITH THE DUAL SWEEP MID EQ TO SIDE-CHAIN SWITCH. THE VT-737SP'S EQ SECTION CAN BE FLIPPED PRE OR POST THE OPTO-COMPRESSOR VIA A FRONT-PANEL SWITCH FOR ALTERNATE EFFECTS AND TONE SHAPING. TWO VT-737SPS CAN BE LINKED VIA A REAR PANEL LINK CABLE FOR STEREO TRACKING. THE COMPRESSOR BYPASS IS A SEALED SILVER RELAY FOR THE MOST DIRECT SIGNAL PATH.


SWEEPABLE EQ AND HARDWIRED BYPASS

THE VT-737SP EQ UTILIZES 100% DISCRETE, CLASS A-HIGH-VOLTAGE TRANSISTORS FOR OPTIMUM SONIC PERFORMANCE. THE HIGH- AND LOW-FREQUENCY BANDS PROVIDE THE SMOOTH CHARACTERISTICS OF AN ALL PASSIVE DESIGN, WHILE THE DUAL MID BANDS INCLUDE VARIABLE FREQUENCY AND SWITCHED Q-WIDTH SELECTION. THE ENHANCED RANGE OF THE VT-737SP'S MID BANDS IS EXTENDED INTO THE HIGH AND LOW BANDS BY THE USE OF X10 FREQUENCY MULTIPLIERS. THE BYPASS SWITCH INCORPORATES A SEALED SILVER RELAY FOR THE MOST DIRECT SIGNAL PATH. WHEN THE EQ TO SIDECHAIN IS ENGAGED, THE HIGH-LOW EQ REMAINS IN THE AUDIO PATH FOR "TONE ENHANCEMENT." THE OUTPUT LEVEL CONTROL PROVIDES A VARIABLE CONTROL OF THE OVERALL SIGNAL PATH. THE OUTPUT AMPLIFIER UTILIZES ANOTHER DUAL TRIODE VACUUM TUBE DRIVING A 100% DISCRETE, CLASS A, HIGH-CURRENT, BALANCED AND DC COUPLED LOW NOISE OUTPUT AMPLIFIER.


AVALON VT-737SP CHANNEL STRIP FEATURES:

VACUUM TUBE AND DISCRETE DESIGN

IDEAL FOR DAW AND DIGITAL RECORDING

WIDE RANGE OF TUBE TONE AND CONTROL

EXCELLENT VALUE FOR PERFORMANCE

RUGGED AVALON CONSTRUCTION

EXTRAS: BOTH HAVE ORIGINAL BOXES AND PACKAGING
ONE OF THE ORIGINAL MANUALS


MODIFICATIONS: NO MODIFICATIONS

HISTORY: ENTIRELY PROJECT STUDIO KEPT - SMOKE FREE ENVIRNMENT - TEMPERATURE CONTROLLED
VERY LOW HOURS ON BOTH PREAMPS (UNDER 50)
NEVER TOURED NEVER LIVE GIGGED
ALMOST NO RACKWEAR - FRONT PLATES ARE BEAUTIFUL
SUPERB MECHANICAL AND COSMETIC CONDITION


COMMENTS: NO KNOWN PROBLEMS AT ALL

THIS UNIT WAS NEVER TOURED

PRICED PER UNIT.