The list below details the changes to the software for these products. If you discover any problems, or have any questions or wishes for the next release, please email us.

Note that some older versions of firmware are available in this history section - linked items may be clicked on and the zip file containing the software downloaded.

Revision History 4 Series
* 1.82 Enhancements
Power up AES bug fixed [Thanks to Otaritec and Y.S.T. in Japan for this one!]
* 1.81 Enhancements
- AES sample rate converter chip bug workaround
[occasional frequency response anomaly if AES lock lost]
* 1.80 Enhancements
- Array Control compatibility added
- G.P.I. Support Added
- Simple remote messaging for gains/delays/memory recall and MIDI format commands (Crestron)
* 1.70 Enhancements
- DP424 minor bug fix. ALL 4 Series up-issued to simplify s/w version numbering
* 1.60 Inital Production Release
- DP428 becomes DP448 - DP446, DP426 and DP424 released

Revision History DP428
* 1.50 Enhancements
- Memory management changes to ensure compatibility with AudioCore V.8.00
* 1.40 Enhancements
- Minor bug fixes to ensure compatibility with AudioCore V.8.00
* 1.30 Enhancements
- Support for preset file loading added
- Long delay (>120mS from power up) bug fixed
- AES Output validity flag error fixed
* 1.20 Initial production release (08.Jun.05)
* 1.10 Prototype release software (18.May.05)

Revision History Series 2
*2.1 Minor AES option bug fix (all Series 2 units)
* 2.0 Control added for new AES interface (all Series 2 units)
* 1.8 C2 ONLY: no auto-dip in level when not listening to sidechain AND changing filter shape (still dips if listen is switched on andfilter shape is adjusted).
* 1.7 First production release (C2/D2/E2/G2)

Revision History DP6i
* 2.3 Wiser wireless support added.
* 2.0 Control added for new AES interface
* 1.7 Preset loading bug fixed (06.Jul.03)
* 1.6 Comms bug fixed - RS232 Master now passes through to RS485 correctly (24.Apr.03)
* 1.4 First production release (01.Apr.03)

Revision History DP324
* 2.00 Control added for new AES interface
* 1.80 New Presets V003 and General Bug fixes. (09.Jul.01)
* 1.76 Support for DynamicC (PC control software added) and Preset support. (14.Mar.01)

Revision History DP224
* 2.90 Enhancements
- New Array Control compatibility added
- Simple remote messaging for gains/delays/memory recall and MIDI format commands (Crestron)
* 2.80 Memory management support for AudioCore V8.00.
* 2.60 Wiser wireless support added.
* 2.40 Control added for new AES interface
* 2.30 Enhancements
- Input channel delay increments down from 1mS to 20uS
- Channel naming via AudioCore (V5.50)
- Split Memory control via AudioCore(V5.50)
* 2.11 Support for GPI option plus increased sensitivity to clip indication with adjustable clip display hold time added. (01.Jun.00)
* 2.00 New Configurations added. Final SIA Smaart Pro interface support. (22.Feb.00)
* 1.70 AudioCore Memory store command bug fix. (20.Oct.99)
* 1.60 Updated support for AudioCore V4.50 + Beta SIA Smaart Pro interface support. (8.Oct.99)

Revision History DP226
* 3.90 Enhancements
- New Array Control compatibility added
- Simple remote messaging for gains/delays/memory recall and MIDI format commands (Crestron)
* 3.80Memory management support for AudioCore V8.00.
* 3.60 Wiser wireless support added.
* 3.40 Control added for new AES interface
* 3.30 Enhancements
- Input channel delay increments down from 1mS to 20uS
- Channel naming via AudioCore (V5.50)
- Split Memory control via AudioCore(V5.50)
* 3.11 Support for GPI option plus increased sensitivity to clip indication with adjustable clip display hold time added. (01.Jun.00)
* 3.00 Final SIA Smaart Pro interface support. (22.Feb.00)
* 2.70 AudioCore Memory store command bug fix. (20.Oct.99)
* 2.60 Updated support for AudioCore V4.50 + Beta SIA Smaart Pro interface support. (8.Oct.99)
* 2.00 Major enhancements.
- Supports Array Control Commands from AudioCore V4.07.
- Supports locking information from AudioCore V4.07.
- Returns locking information when uploading to AudioCore V4.07.
- Added Faster limiter release time constant (x2).
- Returns Unit temperature to AudioCore V4.07.
- AES TX status data fixed (data rate set undefined).
- Added Input and Xover memory erase option to menus.
- Added Interface Off option to menus.
- Arrows added to menu selection system.
- Supports ‘Design Xover’ lock from preset load.
- Supports reading and writing of Preset data Only from PCMCIA card.
- Shows current configuration in status window.