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 66 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. Belden Wire 1 item
  12. Bose 2 items
  13. Bogen 2 items
  14. Calrad 26 items
  15. Cetec Vega 1 item
  16. Clarostat 1 item
  17. COILCRAFT 1 item
  18. Conneaut Audio Devices 2 items
  19. CRL 1 item
  20. Custom 2 items
  21. CTI 1 item
  22. CTI Audio Inc 2 items
  23. CTI INDUSTRIES 1 item
  24. ECS INC 1 item
  25. Edwards Signaling Products 2 items
  26. EIMAC 1 item
  27. Dreree 1 item
  28. ELECTRO CAP 1 item
  29. FAIRCHILD 1 item
  30. FUJITSU 1 item
  31. FORD 1 item
  32. Fourjay Ind 1 item
  33. Floyd Bell Inc 1 item
  34. International Co. 1 item
  35. International Components Corp 1 item
  36. JAPAN 1 item
  37. KNOBS INC - Berkeley 1 item
  38. JENSEN 1 item
  39. JVC 1 item
  40. KNOWLES ELECTRONICS,LLC 3 items
  41. Line Electric 2 items
  42. Koss 1 item
  43. LINE ELEC 1 item
  44. Mallory 1 item
  45. Matsushita 2 items
  46. MG 1 item
  47. MG ELECTRONICS 2 items
  48. MICHIGAN MAGNETICS 1 item
  49. MCM ELX 1 item
  50. Mallory/Electrosonic 2 items
  51. Motorola 2 items
  52. Morse 1 item
  53. MILITARY 1 item
  54. Texas Instruments 1 item
  55. Murata Erie 2 items
  56. MSP 1 item
  57. Mynthal 1 item
  58. NOBLE 1 item
  59. NTE Electronics Inc. 10 items
  60. Philips 2 items
  61. Nortronics 1 item
  62. Philco 3 items
  63. Pfantone 13 items
  64. Panasonic 2 items
  65. Quorum 1 item
  66. RADIX GROUP INT'L 1 item
  67. QUAM 1 item
  68. PROJECTS UNLIMITED 11 items
  69. Primo 1 item
  70. RCA 2 items
  71. Samsung 1 item
  72. S 2 items
  73. ROHM 2 items
  74. Rockwell 1 item
  75. Rogan Brothers 3 items
  76. Russound 1 item
  77. Sanyo 2 items
  78. Shure 1 item
  79. Selenium Brazil 1 item
  80. SEACOR 1 item
  81. Signal Division 1 item
  82. Sony 1 item
  83. Sprague 1 item
  84. Sonetronics 2 items
  85. Sonalert 2 items
  86. STACKPOLE 1 item
  87. Switchcraft 3 items
  88. Star 3 items
  89. STK Electronics Inc 1 item
  90. Toshiba 3 items
  91. THOMAS 1 item
  92. TOA 7 items
  93. TRANSFORMER TECH 1 item
  94. UNTEX 1 item
  95. Vishay/Sprague 1 item
  96. Western Electric 3 items
  97. Westinghouse 1 item
  98. X-Tealth 1 item
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Items 1-24 of 286

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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 $1.19 Regular Price $1.29 As low as $0.69

    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 D Shaft. Stereo , Control, Volume, HI-FI, Amplifier. Package of 2
    Special Price $6.98 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.

    Applications: Stereos, Amplifiers, Instrumentation.

    Vintage - New Old Stock 

    Package of 2

    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
    Special Price $2.98 Regular Price $4.50 As low as $1.98

    BE-010 Microphone Windscreens

    On stage or in a recording studio, a microphone is the most important device you need to capture vocals and instruments. Whether you're cutting your hit single or rocking out in front of a large crowd, your microphone projects everything you do, so having good quality mic accessories just makes sense. Windscreens and grilles are small, lightweight and portable components that can really impact the sound of your performance. Windscreen and grilles are covers that improve the sound quality of a microphone. Normally a windscreen is made from foam and a grille from metal. They act as a filter to prevent popping, breath sound, moisture and wind noise from reaching your mic.

    Dimensions: 1-5/8" tall with a 7/16" Diameter Opening and an Inside Depth 1-1/3"

    High Quality Multi Foam is ideal for reducing wind, sibilance and pop noise. 

    Slides on Easily.

    (Available in Black or Brown)

    Learn More
  8. Unidentified MFG - 7-108 - Audio RF, RCA Male Straight to RCA Male, Right Angle. 8".
    Special Price $0.98 Regular Price $1.29 As low as $0.79

    Unidentified MFG - 7-108 - Audio, RF.

    The RCA connector was invented in the 1940s and was first used to connect an amplifier to a phonograph. They are sometimes referred to as phono connectors due to this original purpose, even though they can be used to carry both audio and video from many different devices. 

    Cable: RCA Male Straight to RCA Male, Right Angle.

    Molded Ends

    Braided Shield

    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 80 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 PAAL - PD-300 PAAL Sport - Personal Alarm 107db Loud!
    Special Price $11.98 Regular Price $16.95 As low as $9.98
    IN STOCK - MORE THAN 1,000 READY TO SHIP!

    QUORUM PAAL - 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.

    Note: Without Battery

    Learn More
  13. PANASONIC - WM-034CY - WM-034 - Audio, Microphone Element. Omnidirectional Electret Condenser Cartridge.
    Special Price $2.49 Regular Price $3.00 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.
    Special Price $3.98 Regular Price $5.00 As low as $2.98

    ECS INC - ZTA-3.58MG - Filter/Resonator.

    Ceramic Resonator 3.58MHz,

    Impedance: 30 Ohm. Tolerance: 0.5%.

    Supply Voltage: 100V

    Dimensions: 10mm wide x 5mm deep x 7.5mm High.

    Package: 2 Pin Radial Leads.

    Lead Spacing: 5mm.

    Note: Extended Temperature Range.

    Additional Information: https://ecsxtal.com/store/pdf/ZTAR.pdf

    Package of 10.

     

    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 $3.98 Regular Price $6.00
    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".

    New Old Stock

    Package of 3.

    Learn More
  19. ASTATIC - T2M-914 - Replacement Omnidirectional Audio, Microphone / Speaker, Electret Cartridge
    Special Price $18.98 Regular Price $24.50 As low as $16.98
    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 $2.49 Regular Price $3.50 As low as $1.49
    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 Electrical Appliances, such as TV, Monitor, DVD, Intercom, 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, Dynamic. Element only, Miniature.
    $29.98
    IN STOCK - MORE THAN 100 READY TO SHIP!

    FV272/1740 - Audio, Microphone Element, Dynamic.

    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 87 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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