Audio Record and Playback Kit

Brand:| Model: AA-AK31141
Add event-driven message playback anywhere with this cost-efficient audio record and playback kit. Use the included microphone to record and the included speaker for playback, or connect to an external source and amplification and create your own custom messaging system.
  • Based on the ISD1730 IC with 20 seconds of message storage and Class D amplification
  • Includes 3/4" speaker and microphone element
  • Versatile design that can also use external sources
  • Record up to 4 messages with 20 seconds total record time
Part # 
Weight: 0.2 lbs.  
List Price$19.99
You Save35%
Your Price
Buy 4-up$12.48
Part # 320-325
Qty:  EA
Available Payment Methods

Product Details

Audio Record and Playback Kit

This cost-efficient record and playback kit is great for point-of-purchase displays, haunted houses, or any application where an event driven (use the on-board switches or wire to an external switch) pre-recorded message is needed. An ISD1730 IC is used for high quality, multimessage voice recording and playback via the built-in audio amplifier. Voice signals can be fed into the IC for recording through two independent paths: a differential microphone input (for use with the included microphone element) or a single-channel 42k ohm analog input.

The ISD1730 provides up to 670 mW (with 5.5 VDC power supply) of Pulse Width Modulation (PWM) Class-D speaker amplification (to power the included 3/4", 8 ohm driver) and a separate analog output for use with an external amplifier (sold separately). Up to four messages (20 seconds of total message duration available) can be recorded and saved into the ICs non-volatile flash memory that maintains recordings, even without power.

A green LED is used as the operating indicator and operating input voltage spans a range from 2.4 to 5.5 VDC to ensure that the kit is optimized for a wide range of battery options; you can even use USB bus power! Kit requires assembly.

Note: Speaker wire in the finished picture is not included.

Key    Function  Description
SW1ResetWhen pressed, the device enters into the powered-on, clear-all state.
SW2RecordWhen pressed, starts recording a message, hold the key for the duration of the message. If there's an analog audio input , hold both SW2 and SW7 to record the analog signal.
SW3PlayPlays recorded messages individually.
SW4EraseErases individual messages or performs a global erase when you keep on hold this key for 4 seconds.
SW5ForwardAdvances to the next message from the current location.
SW6VolumeCycles through 8 volume settings, loudest to softest.
SW7FTHold this key with SW2 to enable the Analog In for analog input record.


Kit includes:
• (1) Printed circuit board (H x W x L): 1.6 x 68.6 x 91.5 mm
• (1) ISD1730 IC
• (1) IC mount
• Resistors:
  (3) 100 kΩ (blue, grey, black stripes)
  (5) 4.7 kΩ (yellow, purple, red stripes)
• Capacitors:
  (1) 470 μF electrolytic 
  (5) 22 μF electrolytic 
  (10) 0.1 μF monolithic
• (1) Green LED
• (1) 1N5819 diode
• (2) Wire terminal blocks
• (1) 3/4", 8Ω speaker 

Product Specifications
  • Project Kit TypeAudio
Audio Record and Playback Kit
  • BrandParts Express
  • ModelAA-AK31141
  • Part Number320-325
  • UPC848864000183
  • Product CategoryElectronic Project Kits
  • Unit of MeasureEA
  • Product Rating
    (3 Reviews)
  • Weight0.2 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Audio Record and Playback Kit
Audio Record and Playback Kit is rated 3.3333 out of 5 by 3.
Rated 5 out of 5 by from Easy to assemble and use.I bought 2 of these to use for sound on a train layout.
Date published: 2014-04-02
Rated 4 out of 5 by from Good Value .. Except for SpeakerI am using for sound effects on a American Flyer train layout. The 1" speaker include with the kit does no justice to the sound quality of the recorder. In fact I thought it was defective and called Parts Express. They replaced the kit immediately. Same problem. Tried a larger speaker and works great. In fact I recommended to a fellow train buddy and built four of them for him No problems simple to assemble in an evening. Soldered pigtails to play and forward button connections to allow hookup to remote contact closure.
Date published: 2013-05-19
Rated 1 out of 5 by from not a good kityou can't hear much at all,and it would help to have a manual. Also they gave me a resistor in place of a capacitor,I do have the parts that I needed:-(
Date published: 2013-03-12

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Audio Record and Playback Kit

Are instructions included?

I ordered this product for my son and I to work on (both beginners at this) but there weren't any instructions with it. Should there have been? If yes, where can I get them.Thanks!-Eric
Asked by: EarlFromMichigan
Eric,The Specs and schematic are available on our website. You can see them below:http://www.parts-express.com/pedocs/specs/320-325-parts-express-specifications.pdfhttp://www.parts-express.com/pedocs/tech-diagrams/320-325-parts-express-technical-diagram.pdf
Answered by: MattP
Date published: 2012-12-12

could this be wried to a micro lever switch?

Asked by: rudy32
This can be wired to an external switch to trigger the sounds.
Answered by: Chrisf
Date published: 2012-12-18

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