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Midi to CV From the Future

The 1983 is a polyphonic MIDI to CV interface with creative voice allocation and automatic tuning capabilities. There are four channels of CV and GATE outputs that can be configured in a variety of layouts: 4-voice polyphony, 3-voice polyphony + 1-voice monophony, 2 monophonic voices with velocity, 1 complex monophonic voice, monophonic voices, 8 gates, 4 gates with velocity, 8 CC channels and 4-channel QUANTIZER.

The 1983 features automatic tuning capabilities, where each channel is able to LISTEN to simple waveforms from the oscillators. With a single press of the TUNE button, the 1983 maps the response of each connected oscillator across all seven octaves.

CV control over the TRANSPOSE jack shifts the outputs by semitones, fifths or octaves and the PORTAMENTO jack sets the glide time by CV. The 1983 always stores the notes played in a legato sequence in a buffer, and the WINDOW jack allows for selecting which of these notes appear at the outputs. When the UPDATE jack is used, it forces the outputs to update only when a trigger is detected. This way a MIDI keyboard can be used as an input interface for harmonies and note sets that are further creatively processed with triggers and CV in the modular environment.

The Quad Quantizer mode on the 1983 converts input voltages into semitones of scales defined either by playing notes into the MIDI input or by the buttons in the menu. This allows the 1983 to be used as a tuning correction device (quantizer) without the necessity or using MIDI.

Bastl has gone the extra length of testing 1983 for compatibility with a growing list of oscillators:  Bastl Tromso, Bubblesound VCOb, Doepfer A-110-1,A-110-6, A-111-3, Epoch Modular Benjolin, Erica Synths Pico Voice, Intellijel Shapeshifter, Malekko Richter Anti-Oscillator, Mannequins, Mangrove, Mutable Instruments Braids, Random Source VCFQ, Studio Electronics Quadnic, WMD Spectrum

1983's default tuning is A = 440Hz in equal temperament, but alternative tuning systems are possible with the µTune feature. It allows working with custom detuning of each semitone in the octave and therefore to work with just intonation and alternative tuning systems. 

Product Specs

Brand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Brand BASTL Instruments
Model 1983 Polyphonic MIDI to CV Interface - Aluminum
Categories Eurorack

Accepted Payment Methods

Shipping Policy

Available for local pickup from Brooklyn, NY, United States

Ships from Brooklyn, NY, United States to:

Continental U.S.
European Union
Everywhere Else

How Long do you Process Orders?
All orders received are packed and shipped within 1-2 business days with some exceptions due to holidays, used items (see Used Item Shipping Terms below), and other special cases.

Orders with FedEx or UPS shipping chosen will be dropped off at the courier on same day if placed by 4:00pm Eastern Standard Time, Monday-Friday with some exceptions.

Orders with USPS overnight shipping chosen will be dropped off at the courier on same day when placed by 4:00pm Eastern Standard Time, Monday-Friday.

Orders with USPS Express shipping will be picked up on same day when played by 12pm/Noon Eastern Standard Time, Monday-Friday.*

Orders placed placed on Fridays after 4pm, Saturdays, and Sundays are not processed until the following Monday.

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If an order needs to be rushed or has special instructions please email us immediately and we will do our best to accommodate your situation.

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The U.S. Postal system does not guarantee delivery times. Please be aware that we are not responsible for delays caused by USPS, FedEx and UPS National Holidays.

If you are visiting us or live in New York and would like to pick up your order at our storefront, please select "In-Store Pickup" as the shipping method during checkout. We will e-mail you when your is ready for pick up. If you would like to order to be held in advance, please e-mail us or leave a note in the Shopping Cart page as to when you will be able to pick your order up. We will hold your order.

Free Shipping in the USA, American Territories, and FPO/UPO Addresses
We offer free USPS Priority Shipping on Items to the United States for orders over $75. This shipping option automatically provides $100 insurance. And does not require Signature Confirmation.

Items such as Cases, Keyboards, Items designated as Used and certain exceptions may not qualify for free shipping.

If accurate shipping times are needed, we recommend FedEx shipping services, as they are guaranteed shipping times.

For multiple items, a shipping refund will be issued after checkout based on location and total package weight.

Paid Shipping
We offer USPS, FedEx, and UPS shipping options. Orders shipped via FedEx will ship with "Indirect Signature" confirmation unless specified in the order as "No Signature" or "Direct Signature" or "Adult Signature". Orders shipped via UPS will ship without signature confirmation unless specified in the order as “Signature”.


We offer worldwide shipping to most countries via USPS, Fedex, and UPS. Shipping costs are calculated in the checkout page. Import duties, taxes and brokerage fees are not included in the product price or shipping and handling costs. Duties, taxes and/or fees will be collected upon delivery from the carriers for certain packages. These charges are the recipient’s responsibility. Control only charges the transportation fee. You may check with your country’s customs office to determine what the additional costs will be.

USPS Priority Mail International and Express services allows for mail and packages weighing up to 70 pounds to most countries, with shipments generally arriving at their destinations within 6–10 days. USPS Priority Mail Express International is the fastest USPS shipping method with deliveries generally arriving in 3–5 business days. We are not responsible for delays on orders shipped via USPS. Once the order leaves the USA, it will be processed by the destination country’s local postal carrier, and any issues will need to be addressed with the destination country’s postal service.

FedEx services allow for mail and packages weighing up to 150 pounds to most countries with guaranteed shipping to certain countries.

For multiple items, a shipping refund will be issued after checkout based on location and total package weight.

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Rhode Island*
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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.


Buyer receives a full refund in their original payment method less any shipping costs.

Special Conditions

Online Order Return Policy

*New Items*
All new items may be exchanged or returned at 100% value if:

*Item is unopened*
Item includes all of the item's content, such as the original box, manuals, cables, trinkets or any other of the item's contents.
Item is returned within 30 days of purchase from item's ship date.
All cables are not eligible for return or exchange.

*Opened New Items*
Opened new items are subject to a 15% restocking fee if:

-Item is Opened
-Item shows any sign of rack rash, use, wear and/or tear.
-Item is missing any of the item's content, such as the original box, manuals, cables, trinkets or any other of the item's contents.
-Item is returned within 30 days of purchase from item's ship date.

*Used Items*
All used items are sold "as-is" and can not be exchanged or returned.

Opened or used item's advertised as Kits are not eligible for return.

Defective items may be replaced if:

*Item is returned within 30 days of purchase from item's ship date*
After 30 days, please contact the manufacturer for replacement or repair.

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BASTL Instruments 1983 Polyphonic MIDI to CV Interface
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