The CARD 32 is a MIDI interface, that connects to the expansion port of the Commodore C64. It was sold from 1986 to 1988 by Steinberg Research. It includes the sequencer software Pro-16 and optionally the music notation program TNS and EditE. It has seven connectors on the back side: MIDI in, 3×MIDI OUT and Roland Drum SYNC, tape in and tape out for tape machine synchronisation.
 Pro-16 MIDI sequencer software
Pro-16 is a 16 track MIDI sequencer software.
 TNS music notation program
TNS is a music notation program.
EditE is perhaps a DX7 patch editor.
EditE is the note / drum editor Eprom.
Printed on circuit board is:
- WALDORF ELECTRONICS
- CARD32 382 000 0001
- COMPONENT SIDE
The PCB contains:
- Three 27128 ROMs labeled: EditE, TNS, Pro 16
- EF 6850 Asynchronous Communications Interface Adapter (ACIA) IC
- EF 6840 MOS PROGRAMMBLE TIMER(N-CHANNEL)
- PAL 16R68 20-PIN TTL PROGRAMMABLE ARRAY LOGIC
- 2× 74LS04 Hex Unbuffered Inverter, 74LS74 Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs
- Optocoupler PC900 for MIDI IN
- LM311, perhaps for Tape I/O (tbe)
- Tape In/Out for tape machine synchronisation, RCA jack
- Roland DRUM SYNC, 5 pin DIN 41524 jack
- Three MIDI OUT, 5 pin DIN 41524 jacks
- One MIDI IN, 5 pin DIN 41524 jack
- Video of vintage Steinberg software including Pro-16.
- customs declaration of Steinberg CARD32 on www.faqs.org