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davidriddle

 Maintained by:
 EMMY AWARD WINNING DAVID RIDDLE IS THE MOST KNOWLEDGEABLE SOURCE SPECIALIZING IN PROFESSIONAL VIDEO, AUDIO, PHOTOGRAPHY, SCIENTIFIC, ELECTRONIC TEST AND MEASURE EQUIPMENT. MR. RIDDLE HAS 40 YEARS OF EXPERIENCE AND IS AVAILABLE M-F FOR FREE CONSULTATION,FREE EXPERT ADVICE,AND FREE TECHNICAL SUPPORT.

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GENERAL RADIO GR V5MT 5A VINTAGE AUDIO POWER AMPLIFIER VACUUM TUBE TESTER VARIAC
 
Buy it now$229.00Time left:1h 50m
NEW SWITCHCRAFT 2501F AMPHENOL 8075MC1F HEATHKIT 432-1 CONNECTOR TO BNC ADAPTER
 
Buy it now$19.00Time left:16h 52m
STACO USA! L1010VA METERED VARIAC 4 MCINTOSH MC240 75 MC275 TUBE AUDIO POWER AMP
 
Buy It Now or Best Offer$549.00Time left:18h 7m
ELGAR USA! 501A VARIABLE AC POWER SUPPLY TEST SOURCE 0-260 VOLTS 400HZ AVIONICS
 
Buy it now$1,289.00Time left:18h 8m
400 200 VOLT DC POWER SUPPLY 6.3V FILAMENT TUBE AUDIO AMPLIFIER PREAMP 300B KT88
 
Buy it now$79.00Time left:1d 15h 47m
NEW UREI LA 4 STUDIO VOCAL MIC AUDIO COMPRESSOR LIMITER MANUAL SERVICE SCHEMATIC
 
Buy it now$19.00Time left:1d 16h 4m
HP 6515A 0-1600V VOLTS HIGH VOLTAGE VARIABLE METERED REGULATED DC POWER SUPPLY
 
Buy it now$389.00Time left:1d 17h 5m
SYSTRON DONNER RS40-15B 0-40V @ 0-15A VARIABLE REGULATED METERED DC POWER SUPPLY
 
Buy It Now or Best Offer$489.00Time left:1d 20h 0m
SUPERIOR ELECTRIC 3PN116B POWERSTAT 0-140 VOLT 10 AMP BENCH VARIAC TRANSFORMER
 
Buy it now$269.00Time left:1d 21h 3m
NEW GENERAL RADIO GENRAD TECHNIPOWER VB2 5AMP 5A VARIAC BRUSH W5 W5MT3 W5MT3A M5
 
Buy it now$29.00Time left:1d 22h 57m
KIKUSUI PAB 250-0.25 0-250V@ 0-250MA VARIABLE REGULATED METERED DC POWER SUPPLY
 
Buy it now$289.00Time left:1d 23h 37m
USA 300B 252A TUBE AUDIO POWER PRE AMPLIFIER VARIABLE DC B+ BIAS FILAMENT SUPPLY
 
Buy It Now or Best Offer$489.00Time left:2d 18h 41m
NEW USA MADE 136 246 3PN136B POWERSTAT 3000 WATT LIGHT DIMMER VARIAC DIAL PLATE
 
Buy it now$24.00Time left:2d 18h 42m
LAMBDA 71 0-500V TUBE AUDIO POWER AMPLIFIER VARIABLE REGULATED 300B B+ DC SUPPLY
 
Buy It Now or Best Offer$789.00Time left:2d 19h 11m
NEW LAMBDA 240V DRP480-1-A DIN RAIL MOUNT 24V 20A 480W REGULATED DC POWER SUPPLY
 
Buy it now$189.45Time left:2d 19h 14m
ONEAC TRUE ISOLATION AC POWER CONDITIONER NOISE CANCEL FILTER 4 AUDIO VIDEO LAB
 
Buy it now$289.00Time left:2d 21h 40m
LAMBDA US 0-115A TYPE III HARD COAT ANODIZING ALUMINUM DC POWER SUPPLY RECTIFIER
 
Buy it now$4,989.00Time left:3d 17h 38m
HP USA SINE WAVE SWEEP AUDIO OSCILLATOR GUITAR AMPLIFIER AMP SPEAKER TEST SIGNAL
 
Buy it now$189.00Time left:4d 21h 42m
HP 204B SINE WAVE SWEEP AUDIO OSCILLATOR GENERATOR ROOM EQ STUDER REEL TO REEL
 
Buy it now$189.00Time left:4d 21h 42m
BEHLMAN 3-25-C VARIABLE FREQUENCY 400 HZ 3Ø 3-PHASE AC VOLTS POWER SUPPLY SOURCE
 
Buy it now$2,289.00Time left:4d 23h 10m
BEHLMAN 3-25-AD VARIABLE FREQUENCY 400HZ 3Ø 3-PHASE AC VOLTS POWER SUPPLY SOURCE
 
Buy it now$2,289.00Time left:4d 23h 10m
POWERSTAT VARIAC VINTAGE MARSHALL TUBE VALVE GUITAR AMPLIFIER LIFETIME WARRANTY
 
Buy it now$269.00Time left:5d 16h 37m
USA MADE TECHNIPOWER W10MT3A 0-10A DUAL METERED VARIAC LIFETIME GUARANTEE > NEW
 
Buy it now$549.00Time left:5d 18h 34m
MCINTOSH MC-40 MC40 MONO TUBE AUDIO POWER AMPLIFIER OWNERS MANUAL COLOR B/W COPY
 
Buy it now$24.00Time left:5d 22h 38m
BSA TRIUMPH NORTON COMMANDO VINCENT BLACK SHADOW EWARTS FUEL VALVE REBUILD KITS
 
Buy it now$48.20Time left:6d 16h 34m
USA MADE GR METERED VARIAC 4 TUBE AUDIO POWER GUITAR AMP AMPLIFIER VINTAGE RADIO
 
Buy it now$319.00Time left:6d 18h 10m
4PC NIB NEW GERMAN ISOPHON P170/30 80W BASS WOOFER MID SPEAKER DRIVER LINE ARRAY
 
Buy it now$24.99Time left:6d 18h 34m
AGILENT HP 6299A 0-100V@0-.75A REGULATED VARIABLE LINEAR METERED DC POWER SUPPLY
 
Buy it now$289.00Time left:6d 18h 48m
AGILENT HP 6114A VARIABLE REGULATED DC CALIBRATOR POWER SUPPLY REFERENCE SOURCE
 
Buy It Now or Best Offer$589.00Time left:7d 0h 27m
LAMBDA EMS 13-200-2-D 0-13V@ 0-200A DIGITAL VARIABLE ADJUSTABLE DC POWER SUPPLY
 
Buy It Now or Best Offer$1,289.00Time left:7d 15h 54m
150A 13V COPPER NICKEL CHROME ZINC SILVER GOLD TANK DC ELECTRO PLATING RECTIFIER
 
Buy It Now or Best Offer$989.00Time left:7d 18h 0m
LAMBDA GEN 60-55-3P208 0-60V@0-55A DIGITAL DC POWER SUPPLY 48V TELECOM RECTIFIER
 
Buy It Now or Best Offer$2,189.00Time left:7d 19h 19m
KEPCO USA ATE-55-10M 0-55V@ 0-10A VARIABLE REGULATED DUAL METER DC POWER SUPPLY
 
Buy it now$489.00Time left:7d 22h 31m
US STACO 3PN501 5-AMP 700W VARIABLE AC TRANSFORMER POWERSTAT VARIAC POWER SOURCE
 
Buy it now$189.00Time left:8d 16h 23m
USA POWERSTAT 116 VARIAC FOR VINTAGE TUBE AUDIO VALVE GUITAR AMP POWER AMPLIFIER
 
Buy it now$229.00Time left:8d 17h 53m
POWER DESIGN TP340 TRIPLE OUTPUT VARIABLE REGULATED LINEAR BENCH DC POWER SUPPLY
 
Buy It Now or Best Offer$349.00Time left:8d 18h 8m
LAMBDA GEN 600-5.5 0-600V@ 0-5.5A DIGITAL VARIABLE DC POWER SUPPLY RS232 RS-485
 
Buy it now$2,189.00Time left:8d 18h 22m
HP 403B AC RMS VOLTMETER ANALOG 4 24-TRACK CALIBRATION TUBE LIMITER AUDIO STUDIO
 
Buy it now$289.00Time left:8d 20h 1m
EICO 1078 DUAL METERED VARIAC VARIABLE AC POWER CONTROLLER EQUIPMENT TESTER >NEW
 
Buy It Now or Best Offer$389.00Time left:8d 21h 10m
0-600V VARIABLE DC POWER SUPPLY TOYOTA PRIUS HONDA HYBRID BATTERY GRID CHARGER
 
Buy it now$2,189.00Time left:8d 22h 13m
NEW NOISE CANCELLING PORTABLE HANDS FREE 2 WAY FIELD HEADSET INTERCOM TELEPHONE
 
Buy it now$189.00Time left:9d 18h 33m
NIKON GN AUTO NIKKOR 45MM 2.8 GUIDE NUMBER LENS AI'D 4 EL2 F F2 F3 F4 FM CAMERAS
 
Buy it now$289.00Time left:9d 22h 3m
LAMBDA LCS-A-04 0-60V@ 0-.37A VARIABLE DC POWER SUPPLY NUCLEAR INSTRUMENTATION
 
Buy It Now or Best Offer$389.00Time left:9d 23h 36m
GENERAL RADIO 1531-AB STROBOTAC RPM STROBE LIGHT TACHOMETER PROPELLER PITCH FAN
 
Buy It Now or Best Offer$589.00Time left:10d 16h 14m
0-600V DC ELECTRIC VEHICLE EV CAR HYBRID BATTERY CELL CHARGER MOTOR PWM TESTER
 
Buy it now$889.00Time left:10d 16h 30m
NEW VARIAC POWERSTAT DIAL PLATE BAKELITE POINTER KNOB 3/8" SHAFT AUTOTRANSFORMER
 
Buy it now$19.00Time left:10d 16h 47m
2 NEW CARTRIDGE HEATER IMMERSION PIPE THAWING BLOCK WATER FLUID HOT PROCESS WELL
 
Buy it now$24.99Time left:10d 17h 42m
LAMBDA USA EMS 30-165-2-D-RSTL 0-30V@ 0-165A DIGITAL DC POWER SUPPLY RS-232 GPIB
 
Buy it now$2,889.00Time left:10d 18h 4m
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