D-subminiature connectors are used to carry balanced analog or digital audio on many multichannel professional audio equipment, where the use of XLR connectors is impractical, for example due to space constraints. The most common usage is the DB25, using TASCAM's pinout (now standardised in AES59[1]). To avoid the possibility of bent pins on fixed equipment, the male connector is generally fitted to the cabling and the female connector to the equipment. The DD50 connector usage is described in AES-2id.[2]

DA15
Pin Quartz

Digital[3]

 Bluefish

Digital[4]

1Out 1/2 +In 5/6 +
2GNDIn 3/4 -
3Out 3/4 +In 3/4 +
4GNDIn 1/2 -
5GNDIn 1/2 +
6Out 5/6 +In 5/6 -
7GNDOut 5/6 -
8Out 7/8 +In 1/2 GND
9Out 1/2 -Out 1/2 GND
10GNDn/c
11Out 3/4 -Out 5/6 +
12GNDOut 3/4 -
13Out 5/6 -Out 3/4 +
14GNDOut 1/2 -
15Out 7/8 -Out 1/2 +
DB25
Pin Yamaha

Digital[5]

 TASCAM / Digidesign Digital[6]

AES59 "Digital combined I/O"[1]

 TASCAM Analog[6]

AES59 "8-way connections"[1]

1In 1/2 +Out 7/8 +In/Out 8 +
2In 3/4 +Out 7/8 GNDIn/Out 8 GND
3In 5/6 +Out 5/6 -In/Out 7 -
4In 7/8 +Out 3/4 +In/Out 6 +
5Out 1/2 +Out 3/4 GNDIn/Out 6 GND
6Out 3/4 +Out 1/2 -In/Out 5 -
7Out 5/6 +In 7/8 +In/Out 4 +
8Out 7/8 +In 7/8 GNDIn/Out 4 GND
9n/cIn 5/6 -In/Out 3 -
10GNDIn 3/4 +In/Out 2 +
11n/cIn 3/4 GNDIn/Out 2 GND
12GNDIn 1/2 -In/Out 1 -
13GNDn/cn/c
14In 1/2 -Out 7/8 -In/Out 8 -
15In 3/4 -Out 5/6 +In/Out 7 +
16In 5/6 -Out 5/6 GNDIn/Out 7 GND
17In 7/8 -Out 3/4 -In/Out 6 -
18Out 1/2 -Out 1/2 +In/Out 5 +
19Out 3/4 -Out 1/2 GNDIn/Out 5 GND
20Out 5/6 -In 7/8 -In/Out 4 -
21Out 7/8 -In 5/6 +In/Out 3 +
22GNDIn 5/6 GNDIn/Out 3 GND
23GNDIn 3/4 -In/Out 2 -
24GNDIn 1/2 +In/Out 1 +
25GNDIn 1/2 GNDIn/Out 1 GND
Lynx AES16(e) Digital I/O Pinout using HD26[7]
Pin Signal Pin Signal Pin Signal
1Clock Gnd10Clock
2Out Ch 8 -11Out Ch 8 +19Out Ch 8 GND
3Out Ch 7 GND12Out Ch 7 -20Out Ch 7 +
4Out Ch 6 -13Out Ch 6 +21Out Ch 6 GND
5Out Ch 5 GND14Out Ch 5 -22Out Ch 5 +
6In Ch 4 -15In Ch 4 +23In Ch 4 GND
7In Ch 3 GND16In Ch 3 -24In Ch 3 +
8In Ch 2 -17In Ch 2 +25In Ch 2 GND
9In Ch 1 GND18In Ch 1 -26In Ch 1 +
DD50 — AES-2id "High-density AES connections"[2]
Pin Signal Pin Signal Pin Signal
1Chassis
2Ch 1 –18Ch 1 +34Ch 1 GND
3Ch 2 GND19Ch 2 –35Ch 2 +
4Ch 3 –20Ch 3 +36Ch 3 GND
5Ch 4 GND21Ch 4 –37Ch 4 +
6Ch 5 –22Ch 5 +38Ch 5 GND
7Ch 6 GND23Ch 6 –39Ch 6 +
8Ch 7 –24Ch 7 +40Ch 7 GND
9Ch 8 GND25Ch 8 –41Ch 8 +
10Ch 9 –26Ch 9 +42Ch 9 GND
11Ch 10 GND27Ch 10 –43Ch 10 +
12Ch 11 –28Ch 11 +44Ch 11 GND
13Ch 12 GND29Ch 12 –45Ch 12 +
14Ch 13 –30Ch 13 +46Ch 13 GND
15Ch 14 GND31Ch 14 –47Ch 14 +
16Ch 15 –32Ch 15 +48Ch 15 GND
17Ch 16 GND33Ch 16 –49Ch 16 +
50Chassis
DD50 — Quartz[3]
Pin Signal Pin Signal Pin Signal
1Ch 1 GND18Ch 1 –34Ch 1 +
2Ch 2 +19Ch 2 –35Ch 2 GND
3Ch 3 GND20Ch 3 –36Ch 3 +
4Ch 4 +21Ch 4 –37Ch 4 GND
5Ch 5 GND22Ch 5 –38Ch 5 +
6Ch 6 +23Ch 6 –39Ch 6 GND
7Ch 7 GND24Ch 7 –40Ch 7 +
8Ch 8 +25Ch 8 –41Ch 8 GND
9Ch 9 GND26Ch 9 –42Ch 9 +
10Ch 10 +27Ch 10 –43Ch 10 GND
11Ch 11 GND28Ch 11 –44Ch 11 +
12Ch 12 +29Ch 12 –45Ch 12 GND
13Ch 13 GND30Ch 13 –46Ch 13 +
14Ch 14 +31Ch 14 –47Ch 14 GND
15Ch 15 GND32Ch 15 –48Ch 15 +
16Ch 16 +33Ch 16 –49Ch 16 GND
17GND50GND

Notes and references

  1. 1 2 3 AES59-2012 Audio Engineering Society, Standard 59 — Audio application of 25-way D-type connectors in balanced circuits
  2. 1 2 AES-2id-2006 Audio Engineering Society, Information Document 2 — Application of AES3 interface: §7.1.6.3 High-density AES connections (Table 7.1, p29)
  3. 1 2 Quartz Q1602 small router system Archived May 16, 2008, at the Wayback Machine
  4. ↑ Bluefish AES breakout cable
  5. ↑ Aviom DB25 pinout information
  6. 1 2 AES/EBU & Analog DB25 Pinouts
  7. ↑ "Lynx Studio Technology, Inc. AES16 pinout". Archived from the original on 2008-12-20. Retrieved 2009-01-16.
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