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. PROJECTS UNLIMITED  PUI - AT-121 - Audio, PZT. Miniature Piezo Audio Transducers. Package of 10.
    PROJECTS UNLIMITED PUI - AT-121 - Audio, PZT. Miniature Piezo Audio Transducers. Package of 10.
    Special Price $6.98 Regular Price $8.95 As low as $3.98

    PROJECTS UNLIMITED PUI - AT-121 - Audio, Miniature Piezo Audio Transducer.

    PUI Audio, a Projects Unlimited Company, is a leading developer, manufacturer and supplier of quality audio devices and components including indicators, transducers, speakers, microphones and sirens.

    Piezo Ceramic Audio Tranducer, 5kHz, 3-28Vp-p 8mA @ 12VDC 85dBA @ 12vp-p.

    Resonant Frequency: 4500 HZ +/-500 Hz.

    Operating Voltage: 3 - 28 Vp-p

    Rated Current: 13 mA

    Capacitance: 17,000 pF =/-30% 

    Current Consumption at 12VDC (Typical): 8 mA

    Sound Pressure Level (dBA) at 1" or 30cm:  95 at 12Vp-p.

    Temperature Range: Operating -30 C to 85 C, Storage -40 C to 95C

    Case: Enclosed 24mm Diameter, 34mm with feet. (3) 45mm-wire leads.

    Note: Wire Lenghts are 45mm not  120 as listed on print.

    Mount: Flange Mounting (See Attached Diagram)

    Wire: 32 AWG Stranded

    Wire Color Code: Red Positive (+), Black Negative (-), Blue (Feedback Connection)

    Weight: 7.4 grams (0.106) oz

    Case Material: ABS. Black

    Package of 10.

    Alternate: Mouser 490-CPE-121, CPE-121

    Made in Taiwan

     

     

    Learn More
  2. ACME - 6-349 - Hardware, Knob.  1/4" Flattened D Shaft. Stereo , Control, Volume, HI-FI,  Amplifier.  Package of 2
    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

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  3. JENSEN - 25CV4 - Transformer, audio. 25VCT line transformer.
    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.

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  4. Unidentified MFG - 7-068 - Cable, audio. RCA male to male. Package of 10.
    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
  5. ASTATIC - DM60 - Audio, Microphone Cartridge Element. 400 Ohm.
    ASTATIC - DM60 - Audio, Microphone Cartridge Element. 400 Ohm.
    Special Price $6.98 Regular Price $9.50 As low as $5.98
    READY TO SHIP - ONLY 98 LEFT IN STOCK!

    DM60 Audio. Microphone Cartridge.

    400 Ohm Coil.

    Material: Nylon Case.

    Dimensions: 0.985" OD x 0.8" Length.

    Color: Beige.

    Purchased from Astatic Factory following Shutdown. Over 200 Sold.

    Vintage New Old Stock

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  6. CTI Audio  - 05114 - Audio, Microphone Element, s.
    CTI Audio - 05114 - Audio, Microphone Element, s.
    Special Price $6.98 Regular Price $9.50
    READY TO SHIP - ONLY 4 LEFT IN STOCK!

    CTI Audio 05114 Audio, Microphone Elements.

    Approximate dimensions: 0.553" OD x 0.838" high.

    No other information available.

    Learn More
  7. Belkin - 75-210B - Coiled  6.35mm (1/4") Male/Female Stereo Audio Headphone Shielded Extension Cord.
    Belkin - 75-210B - Coiled 6.35mm (1/4") Male/Female Stereo Audio Headphone Shielded Extension Cord.
    Special Price $6.98 Regular Price $8.95
    READY TO SHIP - ONLY 12 LEFT IN STOCK!

    Belkin - 75-210B - Coiled 6.35mm (1/4") Male/Female Stereo Audio Headphone Extension Cord.

    Cable: Quality TRS Male Stereo to Female Jack Extension, Shielded Stretch Cord.

    Connectors: 6;35mm Male to 6.35mm Female

    Molded Strain Reliefs

    Conductor Material: Copper

    Length: 5 foot Coiled extends to approximately 14 Feet

    Applications: Headphone or ear bud extension and remore location for easier connectivity to other equipment.

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  8. Unidentified MFG - 9-756-1 - Connector, Mono. Female Receptacle 1/4" (6.35mm) Socket. Package of 10.
    Unidentified MFG - 9-756-1 - Connector, Mono. Female Receptacle 1/4" (6.35mm) Socket. Package of 10.
    Special Price $7.98 Regular Price $9.50
    READY TO SHIP - ONLY 6 LEFT IN STOCK!

    9-756-1 - Connector, Mono Socket, Female Panel Mount Receptacle.

    These jacks can be used for any project or repair that requires a 1/4" jack, as they can fit in most spaces where a 1/4" jack would be required. Full plastic sheathing means that your connections won't ground out

    Female 1/4" (6.35mm) Socket.

    Gender: Female

    Termination Style: Straight

    Material: Polyamide Thermoplastic. 

    Munt: Panel.

    Complete with Hardware.

    Audio Cables and Snakes: Amplifiers, Speakers, Mixing desks, Rack mount equipment, Patch panel

    Alternates: Neutrik NYS2152, Amphenol ACJM-MV35-2

    Package of 10.

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  9. Unidentified MFG - 43831-0100 - Microphone Replacement Grille Ball Head Mesh Cover, Head/Cover/ Windscreen.
    Unidentified MFG - 43831-0100 - Microphone Replacement Grille Ball Head Mesh Cover, Head/Cover/ Windscreen.
    Special Price $7.98 Regular Price $10.50 As low as $6.98
    READY TO SHIP - ONLY 63 LEFT IN STOCK!

    Microphone Replacement Grille Ball Head Mesh Cover, Windscreen.

    If you’ve ever spoken into a microphone before, you probably know to speak into the metal grille for the best results. Chanced are you’ve spoken into a handheld microphone with a spherical grille. Microphone grilles come in many shapes and sizes and have many purposes for microphone performance!

    So what is a microphone grille? A microphone grille (or “grill”) is the protective mesh-like layer around a microphone’s capsule. Grilles provide varying degrees of protection from physical trauma, plosive gusts of air, and moisture while still allowing sound to enter the mic capsule effectively.

    The windscreen attenuates wind noise and environment noise and provides ample protection.

    Material: Metal, Heavy Screen.

    Fits Many Brand Mic Accs

    Audio, Microphone.

    Head/Cover only with windscreen.

    Dimensions: overall 1.734" D x 2.860" high.

    Black lower 1/2 is actually 0.920" Long, Windscreen is actually 1.927" long.

    Threaded ID 1.244" (31.6mm) Diameter at base.

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  10. Mallory/Electrosonic - PT-1550W - Audio alarms and buzzers. Piezo speaker 4KHZ, 0.5%
    Mallory/Electrosonic - PT-1550W - Audio alarms and buzzers. Piezo speaker 4KHZ, 0.5%
    $6.95
    Audio alarms and buzzers. Piezo speaker 4KHZ, 0.5%. Plastic enclosed 16.7mm (0.657") D x 4.1mm (0.164") thick with 2-conductor 3-1/2" leads. Manufactures logo is a Capitol M with a horizontal line through it. Learn More
  11. Unidentified MFG - 8-603 - Microphone/Speaker, Hand Held with Push to Talk (PTT) Switch.
    Unidentified MFG - 8-603 - Microphone/Speaker, Hand Held with Push to Talk (PTT) Switch.
    Special Price $7.98 Regular Price $9.50 As low as $5.98

    UnBranded - 8-603 - Audio, Microphone/Speaker for Two Way Radio Walkier Talkie.

    Hand Held with Locking Slide Switch Press On-up to Talk

    Connectivity: Two Male 2-Conductor Plugs about 5/8" apart, one 2.5mm and one 3.5mm.

    Approximate Dimensions: 5.25" high x 1.5" wide.

    Color: Light Green

    Type of Jack: K 

    Vintage - New Old Stock

    Made in Japan

    Applications: Compatible with various K-Head walkie-talkies

    Learn More
  12. AMPEREX - 114N4P - Transistor, Germanium NPN. Vintage Metal encased component.
    AMPEREX - 114N4P - Transistor, Germanium NPN. Vintage Metal encased component.
    Special Price $6.98 Regular Price $8.95 As low as $5.98
    IN STOCK - MORE THAN 100 READY TO SHIP!

    AMPEREX - 114N4P Transistor, Germanium NPN.

    Package: Metal encased

    Dimenswions: 7mm sq x 15.5mm tall

    3 wire leads. 

    Alternates/Cross: ECG103A, SK3835

    Vintage Transistor Radio Component - New Old Stock

    Learn More
  13. Unidentified MFG - SPEAKER1 - Microphone Element.
    Unidentified MFG - SPEAKER1 - Microphone Element.
    Special Price $7.98 Regular Price $9.50 As low as $6.98

    Microphone Element for Telephones.

    Dimensions: 1.257" D x 0.180" High.

    Overall 0.412" Deep.

    Note: Each with a clear plastic protective cover, overall 1.539" D x 0.37" deep, with threaded ID.

    Learn More
  14. HITACHI - HA1392 - IC, Audio. Power amplifier.
    HITACHI - HA1392 - IC, Audio. Power amplifier.
    Special Price $6.98 Regular Price $8.50

    HITACHI - HA1392 - IC, Audio. Power Amplifier.

    Voltage: 12V @ 4.3 watt or 15V @ 6.8 watt.

    Resistance: to 4 Ohm.

    Package: 12 Pin Single Inline SIP.

    Dimensions: 30mm V 16mm X 5mm

    New Old Stock

    Learn More
  15. Unidentified MFG - STK2125 - 16-PWR SIP PWR AMPLI.
    Unidentified MFG - STK2125 - 16-PWR SIP PWR AMPLI.
    Special Price $7.18 Regular Price $9.57
    16-PWR SIP PWR AMPLI.Listed as Generic Manuf, possibly a Sanyo product. Learn More
  16. CTI audio / Astatic  - 46101-0000 - Microphone Element.
    CTI audio / Astatic - 46101-0000 - Microphone Element.
    Special Price $6.98 Regular Price $8.50

    CTI Audio / Astatic - 46101-0000 Microphone Element.

    Approx Size: 1.148" OD x 2.431" H.

    Made for CTI Audio Inc (Now Astatic).

    Specifications not available.

    Learn More
  17. Astatic/CTI Audio - 42327-0000 - Microphone Element, Insert, Felt Face 0.7"
    Astatic/CTI Audio - 42327-0000 - Microphone Element, Insert, Felt Face 0.7"
    Special Price $7.98 Regular Price $9.50 As low as $6.98

    Astatic/CTI Audio - 42327-0000 Microphone Element, Insert.

    Felt Face 0.7" (17.7mm) Dia x 31.2mm face

    TO contacts.

    Manuf for CTI Audio Inc.

    No other info avail.

    Learn More
  18. Unidentified MFG - 4221700372 -  Audio. Metal Microphone Grille/Windscreen. 1.65" Tall.
    Unidentified MFG - 4221700372 - Audio. Metal Microphone Grille/Windscreen. 1.65" Tall.
    Special Price $7.98 Regular Price $10.50 As low as $6.98

    Unidentified MFG - 4221700372 - Audio. Microphone Grille/Windscreen.

    If you’ve ever spoken into a microphone before, you probably know to speak into the metal grille for the best results. Chanced are you’ve spoken into a handheld microphone with a spherical grille. Microphone grilles come in many shapes and sizes and have many purposes for microphone performance!

    So what is a microphone grille? A microphone grille (or “grill”) is the protective mesh-like layer around a microphone’s capsule. Grilles provide varying degrees of protection from physical trauma, plosive gusts of air, and moisture while still allowing sound to enter the mic capsule effectively.

    The windscreen attenuates wind noise and environment noise and provides ample protection.

    Material: Metal, Heavy Screen.

    Overall Dimensions: 1.714" (43.5mm) Wide x 1.648" (41.8mm) High.

    Threaded ID 1.289" (32.7mm x 5/16").

    Overall 1-1/2" Deep ID.

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  19. SWITCHCRAFT - 2504M - Connectors, 4 pin male.
    SWITCHCRAFT - 2504M - Connectors, 4 pin male.
    $6.95
    Audio, microphones. Connectors, 4 pin male. Old microphone type. Learn More
  20. SANYO - LC7537N - IC, Electronic Volume Control, 42 Pin DIP.
    SANYO - LC7537N - IC, Electronic Volume Control, 42 Pin DIP.
    Special Price $6.98 Regular Price $8.50 As low as $4.98
    IN STOCK - MORE THAN 100 READY TO SHIP!

    SANYO - LC7537N IC. Electronic volume control system for audio equipment.

    The LC7537N is an electronic control LSI capable of electronically controlling the volume, balance, loudness, fader, bass, and treble functions individually with fewer externally connected component parts.

    Case: 42 DIP, Bulk packaged

    Genuine Vintage Sanyo New Old Stock

    Alternate: EN2169C CMOS LSI LC7537, 7537AN, 7537NE 

    Additional Information: https://dtsheet.com/doc/309368/sanyo-lc7537n

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  21. PROJECTS UNLIMITED - AB2040S - Audio, PZT. Piezo bender 4Hz. Package of 100.
    PROJECTS UNLIMITED - AB2040S - Audio, PZT. Piezo bender 4Hz. Package of 100.
    $7.99
    IN STOCK - MORE THAN 100 READY TO SHIP!

    PROJECTS UNLIMITED - AB2040S  Audio, PZT.

    Piezo Ceramic bender.

    Resonant frequency: 4000 +/- 500 Hz.

    Input voltage: 30 Vp-p.

    Resonant impedance: 350 Ohm.

    Capacitance: 25,000 +/- 30% pF,

    Direct CMAS or TTL drive, no feedback electrode.

    Dimensions: 20mm D x 0.2mm thick.

    Specification sheet available upon request.

    Package of 100.

    Learn More
  22. PFANTONE - CH-14F3WH - Single Gang White Wall Plate w/3F Type Jack, 24K Gold Plated
    PFANTONE - CH-14F3WH - Single Gang White Wall Plate w/3F Type Jack, 24K Gold Plated
    $6.00

    Single Gang white wall Plate with 3 F Type Jacks 24 karat gold plated (MANUF. PLANTONE)

    Learn More
  23. CTI AUDIO INC - Astatic - 42349 - New Microphone Elements /Cartridge
    CTI AUDIO INC - Astatic - 42349 - New Microphone Elements /Cartridge
    Special Price $7.98 Regular Price $10.50
    READY TO SHIP - ONLY 8 LEFT IN STOCK!

    CTI AUDIO INC - Astatic - 42349 - Microphone Element / Cartridge

    Approx 1.159" OD X 1.205" High

    New Old Stock, Microphone Element / Cartridge.

    Learn More
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