The 4ms Listen IO is a simple module which gets signals in and out of a Eurorack system by converting to and from normal modular levels. The top section converts any external signal to modular levels by providing up to 30x gain (+30dB), allowing you to use table-top synthesizers, keyboards, phones/tablets, computers, toys, microphones, etc. in your patches. The bottom section does the opposite: modular signals are converted to normal line level signals. The bottom two jacks can be used as line outs or as headphone jacks, so you and a friend can listen in stereo at the same time.

Product Specs

Condition
Brand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand 4MS
Model Listen IO Input / Output Amplifier
Categories Modular Synths

Matt M. - February 28, 2020

Perfect Circuit is the best source for hard to find electronic musical instruments. Prices can be a little high, but still reasonable. My only complaint is when Federal Express is used for shipping, they have a lot of trouble finding my house as I live in a very rural area. This caused a lot of confusion on their end, and my order was delayed by four business days.

George S. - February 28, 2020

Richard M. - February 27, 2020

Great Job

Greg F. - February 27, 2020

Henry M. - February 27, 2020

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Available for local pickup from Burbank, CA, United States

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Return Policy

Return Window

This product can be returned within 30 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.

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Buyer receives a full refund in their original payment method less any shipping costs and a 15% restocking fee.

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Please see our full return policy here: https://www.perfectcircuit.com/return-policy

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Perfect Circuit

Burbank, CA, United States
Joined: Jul 2015

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4MS Listen IO Input / Output Amplifier
$125
+ Free Shipping