Audio

Audio Electronic Parts

At Electronic Surplus, we distribute the best audio surplus products on the market. From speakers and cables to alarms and buzzers, our selection of audio electronic parts is almost endless—if you're looking to buy overstock electronics, you’ll be able to find exactly what you need. With equipment from trusted manufacturers like Bose and Hitachi, you can have confidence in the quality of our inventory.  

Some of the audio electronic parts that we carry are brand-new, while others are slightly used. Upon arrival, all of our used audio surplus products are carefully inspected to ensure that they’re still working properly. You can also request an audio device if we don’t currently have it in stock.  

Browse our selection below.  

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  1. Unmarked 62 items
  2. Hitachi 2 items
  3. ACME 2 items
  4. Aerovox 1 item
  5. Alcoknob 2 items
  6. Aiphone Co Ltd 1 item
  7. Amperex 1 item
  8. Amphenol 2 items
  9. Arrow Hart & Hart 1 item
  10. Astatic 12 items
  11. Bose 2 items
  12. Bogen 2 items
  13. Calrad 26 items
  14. Cetec Vega 1 item
  15. Clarostat 1 item
  16. COILCRAFT 1 item
  17. Conneaut Audio Devices 2 items
  18. CRL 1 item
  19. Custom 2 items
  20. CTI 1 item
  21. CTI Audio Inc 2 items
  22. CTI INDUSTRIES 1 item
  23. ECS INC 1 item
  24. Edwards Signaling Products 2 items
  25. EIMAC 1 item
  26. Dreree 1 item
  27. FAIRCHILD 1 item
  28. FUJITSU 1 item
  29. FORD 1 item
  30. Fourjay Ind 1 item
  31. Floyd Bell Inc 1 item
  32. International Co. 1 item
  33. International Components Corp 1 item
  34. JAPAN 1 item
  35. KNOBS INC - Berkeley 1 item
  36. JENSEN 1 item
  37. JVC 1 item
  38. KNOWLES ELECTRONICS,LLC 3 items
  39. Line Electric 2 items
  40. Koss 1 item
  41. LINE ELEC 1 item
  42. Mallory 1 item
  43. Matsushita 2 items
  44. MG 1 item
  45. MG ELECTRONICS 2 items
  46. MICHIGAN MAGNETICS 1 item
  47. MCM ELX 1 item
  48. Mallory/Electrosonic 2 items
  49. Motorola 1 item
  50. Morse 1 item
  51. MILITARY 1 item
  52. Texas Instruments 1 item
  53. Murata Erie 2 items
  54. MSP 1 item
  55. Mynthal 1 item
  56. NTE Electronics Inc. 10 items
  57. Philips 2 items
  58. Nortronics 1 item
  59. Philco 3 items
  60. Pfantone 13 items
  61. Panasonic 2 items
  62. Quorum 1 item
  63. RADIX GROUP INT'L 1 item
  64. QUAM 1 item
  65. PROJECTS UNLIMITED 11 items
  66. Primo 1 item
  67. RCA 2 items
  68. Samsung 1 item
  69. S 2 items
  70. ROHM 2 items
  71. Rockwell 1 item
  72. Rogan Brothers 3 items
  73. Russound 1 item
  74. Sanyo 2 items
  75. Shure 1 item
  76. Selenium Brazil 1 item
  77. SEACOR 1 item
  78. Signal Division 1 item
  79. Sony 1 item
  80. Sonetronics 2 items
  81. Sonalert 2 items
  82. STACKPOLE 1 item
  83. Switchcraft 3 items
  84. Star 3 items
  85. STK Electronics Inc 1 item
  86. Toshiba 3 items
  87. THOMAS 1 item
  88. TOA 7 items
  89. TRANSFORMER TECH 1 item
  90. UNTEX 1 item
  91. Vishay/Sprague 1 item
  92. Western Electric 3 items
  93. Westinghouse 1 item
  94. X-Tealth 1 item
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Items 1-24 of 278

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  1. PROJECTS UNLIMITED - AT-121-LW45 - Audio, PZT. Piezo tranducers. Package of 50.
    $8.99
    Audio, PZT. Piezo tranducers, 5kHz, 3-28Vp-p 8mA @ 12VDC 85dBA @ 12vp-p. No internal electronics - schematic for driving circuit available. Case: Enclosed 24mm D, 34mm with feet. (3) 45mm-wire leads. Package of 50. Learn More
  2. KNOBS INC - Berkeley - 144010-2 - Hardware, Knob Cap. For Slide Potentiometers.
    Special Price $0.79 Regular Price $0.85 As low as $0.49

    KNOBS INC - Berkeley - 144010-2 - Hardware, Knob Cap.

    Slide-on Mixer/Fader Caps

    Upgrade the cosmetics on Older Studio Graphic Equalizers.

    For Slide Potentiometers having standard rectangular metal shaft measuring 0.155" x 0.047" (4mm X 1.2MM).

    Material: Black Anodized Aluminum Shell, Silver Lined Cap with Nylon Insert

    Overall Dimensions: 0.355" x 0.21" x 0.8" Long (9mm X 5.37mm X 20.35mm).

    Rectangular / Oval Ends, Very Sharp.

    New Old Stock

    Applications: High End Audio Multimix and many other model Audio Equalizer Consoles, Instrumentation, Amplifiers or DJ Equipment.

    Check shaft measurement, Used on some Moog, Rogue, Behringer, ALPs, Tascam, Akai, Mackie, Yamaha, Soundcraft, Pioneer equipment.

    Proudly Made in USA

    Learn More
  3. ALCOKNOB - KNP-900B 1/8 - Equipment, knob. For 1/8" shaft, Stereos, Amplifiers, Instrumentation.
    Special Price $5.98 Regular Price $8.00
    IN STOCK - MORE THAN 100 READY TO SHIP!

    ALCO KNOB - KNP-900B  Series KPN Knob.

    Status: Discontinued

    Fits 1/8" shaft, with one set screw.

    Heavy, Silver. - Stright Knurled

    Matrial: Black Anodized Aluminum  with Vertical Pointer.

    Dimensions: 0.931 OD x 0.54" high. (33.6 X 13.7 mm)

    Applications: Stereos, Amplifiers, Instrumentation. Vintage - Newer Used - Genuine Alco - New Old Stock

     

    Learn More
  4. ACME - 6-349 - Hardware, Knob. 1/4" Flattened Shaft. Stereo , Control, Volume, HI-FI, Amplifier. Package of 4
    Special Price $5.98 Regular Price $8.50
    IN STOCK - MORE THAN 1,000 READY TO SHIP!

    ACME Hardware, knob.

    For 1/4" flattened shaft.

    Black Band 0.74" around it for gripping easily.

    Material: Attractive Chromed Aluminum.

    Dimensions: 0.62" D x 0.90" high.

    Color: Silver.

    Note: The orientation of the indicator line is straight up from the center of the 1/4" (D) circle.

    Upgrade your Old System with High Quality New Old Stock Knobs.

    Package of 4

    Learn More
  5. iSPY007 - SPY EAR - Ear Secret Sound Amplifier Device.
    Special Price $3.98 Regular Price $6.99

    iSPY007 - SPY EAR - Ear Secret Sound Amplifier Device.

    Almost Sold Out- "The Original Super Ear Spy Lisening Device"

    What is this amazing device? This great little gadget is similar to the "disposable hearing aid" you've may have seen advertised on television. It is very small and inconspicuous, yet it can amplify sounds up to 40 or more decibels (that means you will be able to hear some things over 1000 times better!). It is a fun toy for kids, and a useful tool for adults!Just plug in the earphones and turn on the device, adjust the volume to your comfort level, and you are ready to go! You can wear it at your side and amplify all sounds around you, or you can aim the microphone at a source to amplify specific sounds! Batteries not included (Removed).

    Description Item # SPM8757405026 Model # SPYEAR

    "This device is a powerful secret sound amplifie with built-in high sensitive microphone.

    "With this device :
    You can listen clearly to people talking secretly.
    You can listen to the far away sound of the animals while hunting.
    You can spy on people in another room by listening to their conversation.

     

    Learn More
  6. Unidentified MFG - VSQ0055 - VFH Matching Box, Coaxial Transformer, Input 75 Ohm to 300 Ohm Output.
    Special Price $3.98 Regular Price $5.00 As low as $2.98
    IN STOCK - MORE THAN 100 READY TO SHIP!

    VSQ0055 - VFH Matching Box, Coaxial Transformer

    Transformer, coaxial.

    Input 75 Ohm to output 300 Ohm. 

    VHF/UHF/FM & Any Video

    Made in Japan

    Quality Constructed Vintage - New Old Stock

    Learn More
  7. Unidentified MFG - BE-010 - Microphone Windscreens 1-5/8"H x 7/16"ID
    $2.99
    Microphone Windscreens 1-5/8" tall with a 7/16" dia opening and an inside depth 1-1/3" (available in black or brown) Learn More
  8. Unidentified MFG - 7-108 - RCA male straight to RCA male, right angle. 8".
    $0.75
    Audio, RF. Cable: RCA male straight to RCA male, right angle. Length: 8". Learn More
  9. Unidentified MFG - 8-348 - Control/Instrumentation Knurled Knob with Pointer Indicator. For 1/4" Shaft, Splined ID.
    Special Price $2.29 Regular Price $3.00 As low as $1.49
    IN STOCK - MORE THAN 1,000 READY TO SHIP!

    Hardware, Control /Instrumentation Knob with Pointer Indicator.

    Fits Standard 1/4" (0.250") Splined ID Shaft.

    Push-on Design for Convenient Secure Attachment

    Bar Skirted with Indicator Pointer.

    Material: ABS Black Plastic.

    Dimensions: 0.98" OD x 0.60" high.

    Applications: Control Devices (potentiometer, tuner, etc.) on a Radio, Amplifier, Testing Equipment or Musical Instruments, etc.

    Vintage - New Old Stock

    Learn More
  10. Unidentified MFG - F20DP60-55F-D - Speaker, 8 Ohm light weight. Package of 2.
    Special Price $16.98 Regular Price $28.95
    IN STOCK - MORE THAN 100 READY TO SHIP!

    F20DP60-55F-D Speaker.

    8 Ohm.

    Light weight.

    Depth: 2-1/4" maximum (2" max behind panel).

    Some may have a 7 foot, 2 conductor cable with a male RCA plug on one end.

    Speaker dimensions: 7-1/8" D, overall with frame is 8".

    Cross: 1713-3010.

    Note: Package of 2.

    Learn More
  11. PRIMO - EM-47A - Audio, microphone. Electric Condenser Microphone Cartridge
    Special Price $24.98 Regular Price $36.50
    READY TO SHIP - ONLY 81 LEFT IN STOCK!

    PRIMO - EM-47A Audio, Microphone.

    From live concert sound to recording a movie, pro-audio microphones are critical to the clarity of the sound. Primo's products are use inside many major brands from vocal mics to shotgun camera mics, our quality is perfect for professional and amateurs alike.

    Electric Condenser Microphone Cartridge.

    Omni-directional.

    Highest quality, very high output into 200Meg Ohm to 500Meg Ohm, using FET AMP with source follower.

    Has no internal preamps.

    Can withstand very high S.P.L. (sound pressure level over 90db?).

    Dimensions: 0.828" (21mm) D x 10.5mm high.

    Threaded.

    Learn More
  12. QUORUM - PD-300 PAAL Sport - Personal Alarm LOUD!
    Special Price $9.98 Regular Price $14.95 As low as $8.98
    IN STOCK - MORE THAN 1,000 READY TO SHIP!

    QUORUM - PD-300 PAAL Sport - Personal Alarm Security, Loud.

    PAAL Sport 107db personal alarm with door clip and pull pin.

    The Sports PAAL is a high quality weatherproof (Waterproof) personal attack alarm, designed to withstand outdoor activities, repels moisture and offers the owner a true sense of protection.

    Immediately activated by pulling the special pin/cord or by the included door / window N.O. switch opening up. Deactivate it by replacing the special pin to it's original position.

    Battery 9V required, not included.

    Waterproof

    Approximate Dimensions: 2.75" x 2" x 1" (14.22mm X 11.69mm X 4.32mm).

    Weight: 226.8 Grams

    Color: Yellow.

    Learn More
  13. PANASONIC - WM-034CY - WM-034 - Audio, Microphone Element. Omnidirectional Electret Condenser Cartridge.
    Special Price $2.98 Regular Price $3.50 As low as $1.49
    IN STOCK - MORE THAN 100 READY TO SHIP!

    PANASONIC WM-034CY - WM-034 - Audio, Microphone Cartridge.

    Omnidirectional Electret Condenser Cartridge.

    Part Status : Discontinued

    Electret Condenser, Omnidirectional 42db +/-3db.

    Frequency range: 20Hz to 16kHz.

    Impedance: 2.2K Ohm. (2200 Ohms)

    Sensitivity: -62+/- 3dB

    Signal Noise Ratial: 60 dB

    Voltage: 4.5VDC, Voltage Range: 4.5 to 10V  (Vs)

    Current: 800uA.

    Output Type: Analog.

    Dimensions: Circular 9.7mm Diameter x 6.7mm thick. (0.382" X 0.264")

    Through hole radial PCB mount, 2.54mm (0.100") standard pin spacing.

    Termination: Solder Pads.

    Applications: Useful for almost any type telephone and other applications.

    Alternates: P9992-ND, CTI 42059, YPM-CH022, V79CH

    Made in Japan

    Learn More
  14. Line Electric - MD-120VAC-5VA - Electromechanical 120VAC, 5VA.
    Special Price $3.98 Regular Price $5.50

    Line Electric - MD-120VAC-5VA Audio, alarms and buzzers.

    Electromechanical buzzer 120VAC, 5VA.

    Shock hazard.

    Dimensions: 0.9" D x 1.7" long x 1".

    Mount: open frame.

    Applications: toy train gate warning.

    Learn More
  15. JENSEN - 25CV4 - Transformer, audio. 25VCT line transformer.
    Special Price $6.98 Regular Price $9.50
    IN STOCK - MORE THAN 100 READY TO SHIP!

    JENSEN - 25CV4 Transformer, Audio.

    Professional Series "Constant Voltage" Transformer specially designed for "constant voltage" distribution system.

    Input (Primary): 25 Volt balanced or unbalanced line

    Output (Secondary): 8 - Ohm loudspeaker load

    Power to Speaker: 4, 2, 1/2, 1/4, 1/8 watts

    Frequency Response: +/- 1 dB, 50 - 10,000 Hz

    Useful Frequency Response: 30 - 20,000 Hz

    Total Harmonic Distortion: 1/2% Max. 100 - 15,000 Hz

    efficiency: 80% on 4 watt setting

    Nominal Core Size: 5/8" X 5/8"

    Overall Dimensions: 2 7/8"Wide, 1 9/16" Heights, 1 3/4" Depth

    Mounting Holes 1 3/16" diameter on 2 3/8" centers

    Coil/Coil/Core Insulation: 500 volts RMS, 60 Hz

    Net Weight: 9 Oz

    Vintage Genuine Jensen New Old Stock

    Cross: Z3631.

    Learn More
  16. ECS INC - ZTA-3.58MG - Ceramic resonator 3.58MHz. Package of 10.
    $3.00
    Filter/resonator. Ceramic resonator 3.58MHz, 30 Ohm. Tolerance: 0.5%. Dimensions: 10mm wide x 5mm deep x 7.5mm high. Package: 2 Pin radial leads. Lead spacing: 5mm. Note: Extended temperature range. Package of 10. From: 500/manuf bag. More info: http://www.ecsxtal.com/store/pdf/ZTAR.pdf Learn More
  17. Edwards Signaling Products - CS1088 - 876-N5 - Alarms. Security Horns, 103dB loud, 120VAC.
    Special Price $74.99 Regular Price $120.95
    READY TO SHIP - ONLY 43 LEFT IN STOCK!

    Edwards Signaling Products - CS1088 - 876-N5 - Audible Alarm.

    Security horns, 103dB loud,

    120VAC 0.13A 14VA 150-ohm coil.

    Case: 4.5" square.

    Enclosures sold separately. Attached pictures show what is included.

    Weight: 1.4 lbs.

    UPC 093871220332

    Learn More
  18. CUSTOM - 8-366 - Connector. RCA Male to RCA Male. Package of 3.
    Special Price $2.98 Regular Price $4.50
    IN STOCK - MORE THAN 100 READY TO SHIP!

    Custom Connector. RCA Phono Male to RCA Phono Male.

    One straight connector and one Right angle on a white shielded teflon cable.

    Length: 12".

    Package of 3.

    Learn More
  19. ASTATIC - T2M-914 - Replacement Omnidirectional Audio, Microphone / Speaker, Electret Cartridge
    Special Price $14.98 Regular Price $24.50
    IN STOCK - MORE THAN 100 READY TO SHIP!

    ASTATIC - T2M-914 Replacement Omnidirectional Audio, Microphone /Speaker.

    Speaker / Microphone matches virtually any transmitter.

    Micro switch with positive snap action.

    Rotable spring clip on back.

    Power Requirements: 3 to 12 VDC.  

    Quality Electret Cartridge. 

    Lightweight Durable Noryl Housing.

    Dimensions: Approximately 2" wide x 3" high x 1.3" D.

    Complete with 6 wire Neoprene coil cord, extends to 5-1/2 feet. 

    Includes hook up instructions. 

    Electret microphones are a type of electrostatic capacitor-based microphone which eliminates the need for a polarizing power supply by using a permanently charged material.

    Proudly Made in USA

     

    Learn More
  20. Unbranded - Vintage RCA Audio Panel Mount Strip 2 Way Female Audio Coaxial Connector Socket
    Special Price $0.98 Regular Price $1.99 As low as $0.49
    IN STOCK - MORE THAN 1,000 READY TO SHIP!

    Vintage RCA Panel Mount 2 Way Female Audio Coaxial Connector Socket TV Stereo

    Horizontal Panel Mount 2 Way RCA Female Jack Connector Sockets for Various Electronic Connections.

    Panel Mount used in various electric appliances, such as TV, Monitor, DVD, computer, speaker, etc.

    Phenolic Chassis Mount Strip W/Solder Terminal and ceramic insulator

    Overall Length:  1.50" (38.0 mm)

    Overall Depth:  .845" (21.5 mm)

    Mounted Height: 1.0" (25.5 mm)

    Vintage New Old Stock

    Note: Ceramic insulator can be removed to repair used equipment.

    Proudly Made in USA

     

     

     

    Learn More
  21. Unidentified MFG - FV272/1740 - Audio, microphones. Element only, Miniature.
    $29.98
    IN STOCK - MORE THAN 100 READY TO SHIP!

    FV272/1740 - Audio, Microphone Element.

    Element only, miniature.

    Dimensions: Approximately .764"X .50" X .36" (19.5 X 12.7 X 9.0 mm)

    Strong on higher frequencies.

    Researching this element to confirm if it is the Heil HC-5 that is in high in demand by Ham Radio Enthusiasts

    Made in Taiwan

    Learn More
  22. Unidentified MFG - SPK-055 - Speakers. 8 Ohm. Size: 4-1/2" square.
    Special Price $5.98 Regular Price $8.50 As low as $4.98
    READY TO SHIP - ONLY 90 LEFT IN STOCK!

    Full Range Speaker, 4 1/2" Square, ALNiCo Magnet

    Speakers made with ALNiCo magnets are often raved about as the vintage-certified choice of true tone hounds. The fact that the alloy used to make them is more expensive—thanks to some of the precious metals it includes. ALNiCo speakers are made with magnets containing aluminum, nickel and cobalt. 

    Full Range Speakers.

    8 Ohm Coil

    Heavy ALNiCo Magnet

    Size: 4 1/2" Square

    Mount: 3 1/2"

    Vintage - New Old Stock

    Cross: 95140679.

    Learn More
  23. Unidentified MFG - 7-068 - Cable, audio. RCA male to male. Package of 10.
    $6.00
    Cable, audio. RCA male to male. Shielded cable. Length: 13". Color. black. Package of 10. Learn More
  24. Unidentified MFG - DM60 - Audio, Microphone Cartridge Element. 400 Ohm.
    Special Price $6.98 Regular Price $8.50
    IN STOCK - MORE THAN 100 READY TO SHIP!

    DM60 Audio. Microphone Cartridge.

    400 Ohm coil.

    Material: Nylon case.

    Dimensions: 0.985" OD x 0.8".

    Color: Beige.

    Vintage New Old Stock

    Learn More
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