Electronic PVDF Film Stethoscope

Sensitive and robust, this active stethoscope features a small metal and rubber button head with a preamped PVDF film sensor inside. Five feet of shielded cable run from the head to the power module which terminates in a mono 1/4" female output. The unit runs on a single 9 volt battery (included) and is designed to switch off when the output is unplugged.

Extremely low-noise and wide bandwidth (8 - 2 200Hz) make it ideal for recording body sounds such as the heart, blood and lungs. Can also used as a bone conducted pickup or a regular contact microphone or vibration sensor. For most applications you will require the use of a hi-fi or guitar amplifier. Attach sensor with medical tape or stretchy gauze. This item ships worldwide for FREE!

Please click here for the PDF datasheet.

Condenser Hydrophone

Tiny and tough, this active mono condenser hydrophone is great for all kinds of underwater listening and recording. Made with shielded, waterproof cable, a high quality metal output plug and weighted copper head. Recommended for capturing even the quietest ambient water sounds including those in the ultrasonic range. This hydrophone is low noise and high sensitivity with a frequency response range of approx. 20 - 20 000 Hz with a useable frequency of up to about 100 kHz. Requires standard 2 - 9 volt plug in power. Head measures approximately 1/2" wide. Standard model comes with a mono mini male output.

* Requires 2-9V plug in power

Please click here for specifications. This item ships worldwide for FREE!

Binaural Condenser Microphone Set

Each omnidirectional mic capsule is fitted with a strong metal alligator clip which can be attached to a baseball cap brim, headphone arms, glasses, headbands, earmuffs, etc. You don't have to use these mics on your head, they can be configured any way you see fit to obtain unique stereo recordings. Frequency response range of 20 - 20 000 Hz with a useable response up to around 100kHz. S/N ratio of more than 60dB.

Made with high grade shielded black cable and a high quality metal stereo mini (1/8") male output. Mic capsule backs are filled with clear silicone and protected with clear shrinktube.

* Requires 2-9V plug in power

Please click here for specifications. This item ships worldwide for FREE!

Silicone Suction Cup Condenser Microphone

This approximately 1.5 inch wide suction cup has a condenser element secured inside with clear silicone.The medical grade grey silicone suction cup can stay attached to slick smooth surfaces for long periods and works well for through-wall recordings. Blocks out the majority of outside noises. Can be used with mixed success for sticking to the body for the collection of heartbeats, lung sounds, etc. When used for collecting body sounds, it's important to keep the area still as pressure fluctuations within the cup will cause the mic to clip. If unspecified, stock mic comes with mono 1/8" out. Requires plug in power. Please click here for specifications. This item ships worldwide for FREE!

* Requires 2-9V plug in power

Buffered XLR Contact Microphone

A classic brass piezo contact microphone optimized with electronics. This mono mic requires standard 48v phantom power and terminates in a high quality male 3-pin XLR output. The low noise preamp built right into the piezo head lowers the impedance and provides 3dB of amplification giving you a louder, wider, more natural sounding frequency response. Made with 1/8" thick crystal clear shielded audio cable and 27mm brass piezo head backed with glittery gold silicone. Lightweight, durable and moisture resistant. Unbalanced. This item ships worldwide for FREE!

* Requires 48V phantom power
* Includes 1" reuseable mounting tab

Buffered XLR Contact Microphone with Alligator Clip

A classic brass piezo contact microphone optimized with electronics and equipped with a strong metal alligator clip. This mono mic requires standard 48v phantom power and terminates in a high quality male 3-pin XLR output. The low noise preamp built right into the piezo head lowers the impedance and provides 3dB of amplification giving you a louder, wider, more natural sounding frequency response. Made with 1/8" thick crystal clear shielded audio cable and 27mm brass piezo head backed with glittery gold silicone. Alligator clip is soldered to the piezo providing excellent sound transfer. Lightweight, durable and moisture resistant. Unbalanced. This item ships worldwide for FREE!

* Requires 48V phantom power
* Includes 1" reuseable mounting tab

Big Head String Pickup

Designed to be easily and quickly mounted so you can amplify your violin, guitar, upright bass, viola, mandolin, banjo, cello, cigar box, motor vehicle... Whatever! Large, specially-selected 35mm piezo element provides rich, loud, clear tone that requires no preamp. Made with 12 inches of lightweight, super high-quality shielded Denko audio cable and a high-quality all-metal 1/4" female output jack. Pickup head is coated in black rubber to protect your instrument. Attach to bridge or soundboard with included reusable mounting tab. Secure output jack to f-hole, tailpiece or strap button with nylon jack clamp (included) and zipties. Simple yet effective! Reinforced cable/head joint makes it durable and moisture resistant. This item ships worldwide for FREE!

$65 US each
* Includes 1" reuseable mounting tab

Micro Head String Pickup NEW!

The microphone that fits in places no other microphone would dare to go! Designed to be easily and quickly mounted so you can amplify your violin, guitar, upright bass, viola, mandolin, banjo, cello, cigar box, motor vehicle... Whatever! Tiny, specially-selected 9.5mm piezo element provides surprisingly rich, loud, clear tone that requires no preamp. Made with 12 inches of lightweight, super high-quality shielded Denko audio cable and a high-quality all-metal 1/4" female output jack. Pickup head is coated in black rubber to protect your instrument. Attach to bridge or soundboard with included reusable mounting tab. Secure output jack to f-hole, tailpiece or strap button with nylon jack clamp (included) and zipties. Simple yet effective! Reinforced cable/head joint makes it durable and moisture resistant. This item ships worldwide for FREE!

$70 US each
* Includes .25" reuseable mounting tab

Includes one reusable mounting tab and nylon attachment clamp

Basic Contact Microphone

Passive brass piezo mono contact microphone with high quality 1/4" male output plug. Made with 1/8" thick crystal clear shielded audio cable and 27mm brass piezo head backed with glittery gold silicone. Lightweight, durable and moisture resistant. Great for noise enthusiasts or for miking musical instruments. This item ships worldwide for FREE!

* Includes 1" reuseable mounting tab

Basic Contact Microphone with Alligator Clip

Passive brass piezo mono contact microphone with high quality 1/4" male output plug. Made with 1/8" thick crystal clear shielded audio cable and 27mm brass piezo head backed with glittery gold silicone. Soldered onto the disc is a small alligator clip that can open its jaws approximately 0.25 inches wide. Originally designed for collecting sounds from wires, bridges and chain link fences, sound transfer from the clip is excellent. Lightweight, durable and moisture resistant. Great for noise enthusiasts or for miking musical instruments. This item ships worldwide for FREE!

* Includes 1" reuseable mounting tab

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Basic Contact Microphone - 1/4" Stereo Set

This stereo set comes with two 1/4" mono male phone plugs and can be used as is or pulled apart to make two mono mics. Made with 1/8" thick crystal clear shielded audio cable and 27mm brass piezo head backed with glittery gold silicone. Lightweight, durable and moisture resistant. Great for noise enthusiasts or miking musical instruments. Single stereo 1/4" plug available upon request. This item ships worldwide for FREE!

* Includes 2, 1" reuseable mounting tabs

Basic Contact Microphone - 1/4" Stereo Set with Alligator Clips

This stereo set comes with two 1/4" mono male phone plugs and can be used as is or pulled apart to make two mono mics. Made with 1/8" thick crystal clear shielded audio cable and 27mm brass piezo head backed with glittery gold silicone. Soldered onto the disc is a small alligator clip that can open its jaws approximately 0.25 inches wide. Originally designed for collecting sounds from wires, bridges and chain link fences, sound transfer from the clip is excellent. Lightweight, durable and moisture resistant. Great for noise enthusiasts or miking musical instruments. Single stereo 1/4" plug available upon request. This item ships worldwide for FREE!

* Includes 2, 1" reuseable mounting tabs

Mini Contact Microphone Stereo Set

This stereo set is made with 27mm passive brass piezo heads and high quality black shielded audio cable, terminating in a high quality stereo 1/8" output. Mic heads are backed with glittery gold silicone. Lightweight, durable and moisture resistant. Excellent for field recording. This item ships worldwide for FREE!

* Includes 2, 1" reuseable mounting tabs

Mini Contact Microphone Stereo Set with Alligator Clips

This stereo set is made with 27mm passive brass piezo heads with two strong metal alligator clips attached. Made with high quality black shielded audio cable and terminating in a high quality stereo male 1/8" output. Mic heads are backed with glittery gold silicone and clips are soldered to the brass, providing excellent sound transfer. Lightweight, durable and moisture resistant. Excellent for field recording. This item ships worldwide for FREE!

* Includes 2, 1" reuseable mounting tabs

Silicone Suction Cup Microphone - Mini

This microphone is made with a medical grade grey silicone suction cup that can stay attached to slick smooth surfaces for long periods. Works best when used with a high impedance amplifier and/or preamp. This suction cup is approximately 1.5 inches wide with a 20mm brass piezo sensor element secured inside the cup with clear silicone. Standard model comes with mono male 1/4" output. This item ships worldwide for FREE!

Silicone Suction Cup Microphone - Medium

This microphone is made with a medical grade grey silicone suction cup that can stay attached to slick smooth surfaces for long periods. Works best when used with a high impedance amplifier and/or preamp. This suction cup is approximately 2.75 inches wide with a 27mm brass piezo sensor element secured inside the cup with clear silicone. Standard model comes with mono male 1/4" output. This item ships worldwide for FREE!

Factory-Shielded Piezo Film Tab Contact Microphone

This little PVDF film tab has been fold-shielded at the factory so the bare surface of the film can be put into direct contact with your sound source. This makes it a much more sensitive microphone that still needs to be properly attached to a surface to sound good. Cover with a slip of paper and tape down tight. Comes with 17 inches of cable and 1/4 inch male mono phone output plug. Excellent for under-bridge placement on violin, bass and cello. This item ships worldwide for FREE!

* Includes 1" reuseable mounting tab

$45 US each

Large PVDF Film Tab Contact Microphone

A large 6 inch by approximately 0.75 inch film tab mic, fully shielded with copper tape and hooked up with high quality shielded black cable to a male 1/4" plug. To get the most out of this microphone the entire length of the film tab needs to be securely attached or clamped to the vibratory surface. Cover with a slip of paper and tape down tight. Use with a piezo preamp and/or amp for best results. Use caution when handling, copper edges are sharp. Can also be made with other plugs upon request. This item ships worldwide for FREE!

Buffered XLR Hydrophone

This active piezoelectric hydrophone is made with shielded clear waterproof cable and a weighted copper head coated in non-toxic, durable black rubber. Requires standard 48v phantom power and terminates in a high quality male 3-pin XLR output. The low noise preamp built right into the head lowers the impedance and provides 3dB of amplification giving you a louder, wider, more natural sounding frequency response. Lightweight, durable and fully waterproof. Hydrophone head measures approx. 33mm by 33mm. Unbalanced. This item ships worldwide for FREE!

* Requires 48V phantom power

Balanced Hydrophone NEW!

This balanced, passive hydrophone is perfect for ultra low-noise, high-gain recording. Made with shielded black cable, a large 35mm brass piezoelectric head coated in black non-toxic rubber, and a male XLR output plug. Can be used for all kinds of underwater listening and recording, including detecting swimming pool leaks. Can also be used outside of water as a normal contact microphone. Can be safely frozen or boiled. Use with an amplifier for best results. Extremely rugged! This item ships worldwide for FREE!

Basic Mono Hydrophone

This passive piezoelectric hydrophone is made with shielded clear waterproof cable and a weighted copper head coated in non-toxic, durable black rubber. Standard model comes with a male mono 1/4 inch output plug. Can be used for all kinds of underwater listening and recording, including detecting swimming pool leaks. Lightweight, durable and fully waterproof. Use with an amp and/or preamp for best results. Will withstand both freezing and boiling. Hydrophone head measures approx. 33mm by 33mm. This item ships worldwide for FREE!

Basic Stereo Hydrophone

This true stereo, passive hydrophone is made with shielded black cable, a 27mm doubled brass piezo head coated in black non-toxic rubber, and a stereo mini male (1/8 inch) output plug. Can be used for all kinds of underwater listening and recording, including detecting swimming pool leaks. Can also be used outside of water as a normal contact microphone. Can be safely frozen or boiled. Use with an amplifier for best results. Extremely rugged! This item ships worldwide for FREE!

Audio Sample 1 - Ben Lawer stream in Scotland, recorded with a Basic Stereo Hydrophone

1" Reusable Mounting Tab

These double-sided, clear, one inch square tabs are perfect for mounting contact microphones temporarily to various flat surfaces including painted walls, windows, glass, concrete, wood, stainless steel, plastic and many more. Each tab can hold up to 113 grams or a quarter of a pound in weight. They will not damage most surfaces and can be used over and over again by washing with soapy water and allowing to air dry if their stickiness starts to wear out. Comes in a small plastic parts bag for storage.

$1 USD each or 10 for $8
shipping: $3 (Email me for combined shipping!)

Brass Piezo Discs

These piezos have an excellent frequency response that ranges from about 20 Hz up into the ultrasonic range. Make your own contact mics, drum triggers, speakers, switches, buzzers, transducers... Five sizes available. Click here for piezo specifications.

$1 USD each or 50 for $40
shipping: $10 (Email me for combined shipping!)

Prewired Brass Piezo Discs

These piezos have 2.5 inch prefinished lead wires with solder joins protected by a thin dab of silicone. Use them to easily make your own contact mics, repair drum triggers, build speakers, switches, buzzers or transducers without the need to solder directly to a fragile piezo. Available diameters are 20mm, 27mm, 35mm and 43mm. Click here for piezo specifications.

$3 USD each or 10 for $20
shipping: $5 (Email me for combined shipping!)

10 piece packs:

Prewired Brass Piezo Discs - Rubber Dipped

The same piezos as seen above but with a triple layer of waterproof, chemical-proof and latex-free black rubber coating.

$5 USD each or 5 for $20
shipping: $6 (Email me for combined shipping!)

Small PVDF Piezo Film Tabs

These 1 inch by 1/2 inch flexible fluoropolymer film tabs have two metal pins for soldering to connections of your choice. These film tabs usually need to be shielded to reduce hum. They have a vast frequency response range in excess of 0.001 Hz to over 1 billion Hz.

To download a PDF version of the technical manual for PVDF film, please click here.

$6 USD each or 10 for $55
shipping: $3 (Email me for combined shipping!)

Large PVDF Piezo Film Tabs

These 22mm by 171mm (7/8 inch by 6 3/4 inch) flexible fluoropolymer film tabs have 11 inch long prewired leads for soldering to connections of your choice. These film tabs usually need to be shielded to reduce hum. They have a vast frequency response range in excess of 0.001 Hz to over 1 billion Hz.

To download a PDF version of the technical manual for PVDF film, please click here.

$30 USD each
shipping: $5 (Email me for combined shipping!)

Self-Adhesive Copper Shielding Tape - 60mm Wide

60mm wide and sold by the foot, a must for unshielded film tab microphones, guitar and bass pickup cavities, electronics, etc. Easy to solder to, with one side coated with a strong conductive adhesive. It's sharp, so use caution when handling.

Copper tape will be be shipped neatly folded.

$3 USD per foot
shipping: $3 (Email me for combined shipping!)