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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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NEW GENERAL RADIO GENRAD TECHNIPOWER VB2 5AMP 5A VARIAC BRUSH W5 W5MT3 W5MT3A M5
 
Buy it now$29.00Time left:1h 14m
KIKUSUI PAB 250-0.25 0-250V@ 0-250MA VARIABLE REGULATED METERED DC POWER SUPPLY
 
Buy it now$289.00Time left:1h 54m
USA 300B 252A TUBE AUDIO POWER PRE AMPLIFIER VARIABLE DC B+ BIAS FILAMENT SUPPLY
 
Buy It Now or Best Offer$489.00Time left:20h 58m
LAMBDA 71 0-500V TUBE AUDIO POWER AMPLIFIER VARIABLE REGULATED 300B B+ DC SUPPLY
 
Buy It Now or Best Offer$789.00Time left:21h 28m
NEW LAMBDA 240V DRP480-1-A DIN RAIL MOUNT 24V 20A 480W REGULATED DC POWER SUPPLY
 
Buy it now$189.45Time left:21h 31m
ONEAC TRUE ISOLATION AC POWER CONDITIONER NOISE CANCEL FILTER 4 AUDIO VIDEO LAB
 
Buy it now$289.00Time left:23h 57m
GENERAL RADIO 1531-AB STROBOTAC RPM STROBE LIGHT TACHOMETER PROPELLER PITCH FAN
 
Buy It Now or Best Offer$589.00Time left:1d 19h 34m
LAMBDA US 0-115A TYPE III HARD COAT ANODIZING ALUMINUM DC POWER SUPPLY RECTIFIER
 
Buy it now$4,989.00Time left:1d 19h 55m
HP USA SINE WAVE SWEEP AUDIO OSCILLATOR GUITAR AMPLIFIER AMP SPEAKER TEST SIGNAL
 
Buy it now$189.00Time left:2d 23h 59m
HP 204B SINE WAVE SWEEP AUDIO OSCILLATOR GENERATOR ROOM EQ STUDER REEL TO REEL
 
Buy it now$189.00Time left:2d 23h 59m
BEHLMAN 3-25-C VARIABLE FREQUENCY 400 HZ 3Ø 3-PHASE AC VOLTS POWER SUPPLY SOURCE
 
Buy it now$2,289.00Time left:3d 1h 27m
BEHLMAN 3-25-AD VARIABLE FREQUENCY 400HZ 3Ø 3-PHASE AC VOLTS POWER SUPPLY SOURCE
 
Buy it now$2,289.00Time left:3d 1h 27m
POWERSTAT VARIAC VINTAGE MARSHALL TUBE VALVE GUITAR AMPLIFIER LIFETIME WARRANTY
 
Buy it now$269.00Time left:3d 18h 54m
USA MADE TECHNIPOWER W10MT3A 0-10A DUAL METERED VARIAC LIFETIME GUARANTEE > NEW
 
Buy it now$549.00Time left:3d 20h 51m
MCINTOSH MC-40 MC40 MONO TUBE AUDIO POWER AMPLIFIER OWNERS MANUAL COLOR B/W COPY
 
Buy it now$24.00Time left:4d 0h 55m
BSA TRIUMPH NORTON COMMANDO VINCENT BLACK SHADOW EWARTS FUEL VALVE REBUILD KITS
 
Buy it now$48.20Time left:4d 18h 51m
USA HP 6226A 0-40V@ 0-1.5A VARIABLE REGULATED METERED LINEAR LAB DC POWER SUPPLY
 
Buy it now$189.00Time left:4d 18h 52m
USA MADE GR METERED VARIAC 4 TUBE AUDIO POWER GUITAR AMP AMPLIFIER VINTAGE RADIO
 
Buy it now$319.00Time left:4d 20h 27m
4PC NIB NEW GERMAN ISOPHON P170/30 80W BASS WOOFER MID SPEAKER DRIVER LINE ARRAY
 
Buy it now$24.99Time left:4d 20h 51m
AGILENT HP 6114A VARIABLE REGULATED DC CALIBRATOR POWER SUPPLY REFERENCE SOURCE
 
Buy It Now or Best Offer$589.00Time left:5d 2h 43m
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:5d 18h 11m
150A 13V COPPER NICKEL CHROME ZINC SILVER GOLD TANK DC ELECTRO PLATING RECTIFIER
 
Buy It Now or Best Offer$989.00Time left:5d 20h 17m
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:5d 21h 35m
KEPCO USA ATE-55-10M 0-55V@ 0-10A VARIABLE REGULATED DUAL METER DC POWER SUPPLY
 
Buy it now$489.00Time left:6d 0h 48m
US STACO 3PN501 5-AMP 700W VARIABLE AC TRANSFORMER POWERSTAT VARIAC POWER SOURCE
 
Buy it now$189.00Time left:6d 18h 40m
USA POWERSTAT 116 VARIAC FOR VINTAGE TUBE AUDIO VALVE GUITAR AMP POWER AMPLIFIER
 
Buy it now$229.00Time left:6d 20h 10m
POWER DESIGN TP340 TRIPLE OUTPUT VARIABLE REGULATED LINEAR BENCH DC POWER SUPPLY
 
Buy It Now or Best Offer$349.00Time left:6d 20h 25m
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:6d 20h 39m
HP 403B AC RMS VOLTMETER ANALOG 4 24-TRACK CALIBRATION TUBE LIMITER AUDIO STUDIO
 
Buy it now$289.00Time left:6d 22h 18m
EICO 1078 DUAL METERED VARIAC VARIABLE AC POWER CONTROLLER EQUIPMENT TESTER >NEW
 
Buy It Now or Best Offer$389.00Time left:6d 23h 27m
AGILENT HP 6299A 0-100V@0-.75A REGULATED VARIABLE LINEAR METERED DC POWER SUPPLY
 
Buy it now$289.00Time left:7d 18h 56m
NEW NOISE CANCELLING PORTABLE HANDS FREE 2 WAY FIELD HEADSET INTERCOM TELEPHONE
 
Buy it now$189.00Time left:7d 20h 49m
LAMBDA LCS-A-04 0-60V@ 0-.37A VARIABLE DC POWER SUPPLY NUCLEAR INSTRUMENTATION
 
Buy It Now or Best Offer$389.00Time left:8d 1h 53m
0-600V DC ELECTRIC VEHICLE EV CAR HYBRID BATTERY CELL CHARGER MOTOR PWM TESTER
 
Buy it now$889.00Time left:8d 18h 46m
NEW VARIAC POWERSTAT DIAL PLATE BAKELITE POINTER KNOB 3/8" SHAFT AUTOTRANSFORMER
 
Buy it now$19.00Time left:8d 19h 3m
2 NEW CARTRIDGE HEATER IMMERSION PIPE THAWING BLOCK WATER FLUID HOT PROCESS WELL
 
Buy it now$24.99Time left:8d 19h 59m
KEPCO ATE 15-6M 0-15V@ 0-6A VARIABLE REGULATED METERED LAB BENCH DC POWER SUPPLY
 
Buy it now$249.00Time left:8d 21h 51m
KEPCO USA ATE-25-20M 0-25V@ 0-20A VARIABLE REGULATED DUAL METER DC POWER SUPPLY
 
Buy it now$449.00Time left:8d 22h 30m
> NEW USA STACO 3PN1010 0-120/140V VARIABLE AC 10-AMP VARIAC LIFETIME WARRANTY
 
Buy it now$269.00Time left:9d 0h 15m
NEW CUSTOM 330W METERED ISOLATED VARIAC AC POWER SUPPLY SOURCE TUBE AUDIO TESTER
 
Buy it now$449.00Time left:9d 1h 44m
NEW VARIAC POWERSTAT OHMITE STACO ADJUST A VOLT DIAL PLATE KNOB AUTOTRANSFORMER
 
Buy it now$19.00Time left:9d 18h 23m
BEHLMAN BL3X350C-8-I-L VARIABLE FREQUENCY 50 400 HZ 3-PHASE AC POWER SUPPLY GPIB
 
Buy it now$3,989.00Time left:9d 20h 52m
NEW ULTRA BRIGHT 12 VOLT DC SOLAR WHITE LIGHT BOAT MARINE LIGHTING > LED LAMP
 
Buy it now$9.99Time left:9d 21h 7m
BSA TRIUMPH NORTON VINCENT VELOCETTE AJS SEAGULL EWARTS FUEL VALVE REBUILD KITS
 
Buy it now$48.00Time left:9d 21h 46m
ORIGINAL GENERAL RADIO KNOB SET 4 FAIRCHILD 670 STEREO AUDIO LIMITER COMPRESSOR
 
Buy it now$449.00Time left:9d 22h 22m
BARCUS BERRY 1333 SUPER BOOST INSTRUMENT TRANSDUCER PICK-UP PREAMP PREAMPLIFIER
 
Buy It Now or Best Offer$49.00Time left:10d 0h 48m
DRCO USA CUSTOM MADE DUAL RANGE 0-2A 0-20A ANALOG SIMPSON AMPS METER FOR VARIACS
 
Buy It Now or Best Offer$289.00Time left:10d 1h 5m
NEW NOS VINTAGE SHURE M67 MICROPHONE AUDIO MIXER CLASS A TRANSFORMER MIC PRE
 
Buy It Now or Best Offer$289.00Time left:10d 1h 47m
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