Roland TR-707 Rhythm Composer - Exclusive Soundgas HKA Modified Edition

Roland TR-707 Rhythm Composer - Exclusive Soundgas HKA Modified Edition.

Legendary programmable drum machine, modified and expanded with exclusive Soundgas HKA mod including 707, 727, 808 and 909, plus four of our own custom banks.

Supplied freshly serviced and modified with extra voice EPROM expansion from HKA Design, but for this one we've added four banks (of the eight) with our own sounds - an idiosyncratic selection culled from some of our favourite drum machines by our wizard synth tech, Chris.

This non-invasive, reversible mod allows switching between eight banks of sounds (it still operates exactly as a stock 707 at power up). Featuring new drum sounds in each kit. The last two sounds  (707 crash + ride or 727 quijada + chime) remain the same across all banks, as they are stored on their own ROMs.

Note: All sounds are extracted from our own machines. Note that the limitations of the EPROM storage mean samples must be short and punchy (hence the cymbals having their own EPROM). This affects the choice of sounds to include, and also means you won't get a deep booming 808 kick.

Bank switching is done by pressing down one of the first 8 step keys whilst holding down the Enter key. The setting is remembered and will be recalled the next time it’s turned on. There are no modifications to the outside of the machine, and the installation is easily reversible.

Covered by our usual warranty.

Condition: In very good overall condition despite the usual marks around the edges and corners of the unit. Faceplate is still very clean and print has held up very nicely. Please see photos or get in touch if you require more information on condition.

Voltage: 12V Centre Negative power supply (not included but easy to source).

Tax: For sales in UK the price will include 20% VAT. Buyers elsewhere may incur VAT or other local taxes on import.

Shipping: Shipped securely, tracked, and insured worldwide.

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Reverb customers please note:

We are based in the UK and have many years’ experience sourcing, servicing and shipping delicate vintage gear worldwide. You can rely on us to pack your item with care, and deliver swiftly by international courier with full tracking and insurance.

We offer a professional satisfaction-guaranteed service: customer care and attention to detail are paramount. Please message us if you have any questions or feedback. Tony