Amiga Hardware DatabaseManufacturer Oliver Achten / Alinea Computer, Germany | Date 2025 | Amiga A2000, A3000, A4000 | Interface Zorro II | Autoconfig ID 2782 / 16,17,18 |
- Sound Card
- 24 bit sound card with high quality audio output which offers multiple analogue and digital interfaces
- GUS officially stands for "Great Unbelievable Sound", but can also be read as a reference to the Gravis Ultrasound (GUS) sound cards of the 1990s with superior sound quality
- 32 MB on-board sample memory, clocked at 122.2 MHz
- high-quality digital mixer which operates at full 192kHz @ 24 bit resolution
- 32 channel wavetable engine - featuring per voice:
- 8 /16 bit sample support, 192kHz @ 24 bit mixing rate
- sample start, stop and loop pointer for effective one-shot or continuous playback modes
- 32 bit sample phase accumulators allows fine grained pitch definition
- optional sample interpolation for smooth sounds
- channel independent left / right stereo panning
- hardware ADSR envelope generator
- MP3/OGG/FLAC/WMA hardware decoder (VLSI VS1063), enhanced by a DMA stream buffer
- inputs/outputs:
- 1× RCA stereo output, converted from 192kHz @ 24 bit
- 1× TOSLINK optical digital output, supporting 48kHz, 96kHz & 192kHz @ 24 bit
- 3× analogue audio inputs, sampled at 192kHz @ 24 bit: Paula (internal header), CD-ROM (internal header), external source (external RCA input)
- 1× digital output of final mix, to be used as input for other cards
- AHI stream interface, supporting 8 /16 & 24 bit modes for playback and recording
- mixer settings are stored in flash and automatically loaded on start-up - thus working without additional software
- upgradable FPGA core via JTAG interface, or via Amiga-based flash tool
- open hardware, gerbers and FPGA bitstream are freely available on Github
- as the card does most of the tasks in hardware, the minimum system configuration is an A2000 with stock 68000 CPU @ 7.09 MHz, 1 MB ChipRAM and 4 MB FastRAM
- driver support: AHI, MHI, CAMD (planned)
front side