DR-770 Dr. Rhythm
Drum Machine

image source: bosscorp.co.jp

The DR-770 is a direct descendent of the longstanding and popular Boss' DR "Dr. Rhythm" line of drum machines that dates back to the minuscule DR-55.

The successor to the DR-660, the 770 improves on several aspects, including number and quality of samples, memory, and most of all, it features DPP, useful and lots of fun, especially in a live, jam or rehearsal situation.

The sample ROM is very generous, with many sounds to choose from, including vintage, jazz, hard, electronic, and ethnic samples - most people are not going to miss the expansion capability of other drum machines, such as - say - Roland (of which Boss is part of) 's classic R-8.

The 770 is an extremely compact instrument, with the buttons spaced pretty tight next to each other.  Two alpha dials serve duty for volume and value changes.  The inclusion of ambience and modulation effects is a big plus, especially for genres like reggae (the kits have great echo/delay effects on the right instruments) and electronica that can always benefit from them - as opposed to more classic styles like rock, that pretty much are okay with just a pinch of reverb.

In all, this blue wonder is a great tool for composing, and certainly great-sounding, and thanks to its large sample ROM, can be used in any recording or live situation that requires being able to provide percussion in several different styles.
 

Here is the DR-770 on-board factory song:

Doctor's Party

and following are examples of the preset patterns:

Stream all audio demos below:

• light and portable;
• deep editing and programming;
• high quality sounds;
• Direct Pattern Play is an awesome feature;
• On-board FX.

Available at www.roland.com