D-subminiature (professional audio)

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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]

Pin	Quartz Digital^[3]	Bluefish Digital^[4]
DA15
1	Out 1/2 +	In 5/6 +
2	GND	In 3/4 -
3	Out 3/4 +	In 3/4 +
4	GND	In 1/2 -
5	GND	In 1/2 +
6	Out 5/6 +	In 5/6 -
7	GND	Out 5/6 -
8	Out 7/8 +	In 1/2 GND
9	Out 1/2 -	Out 1/2 GND
10	GND	n/c
11	Out 3/4 -	Out 5/6 +
12	GND	Out 3/4 -
13	Out 5/6 -	Out 3/4 +
14	GND	Out 1/2 -
15	Out 7/8 -	Out 1/2 +

Pin	Yamaha Digital^[5]	TASCAM / Digidesign Digital^[6] AES59 "Digital combined I/O"^[1]	TASCAM Analog^[6] AES59 "8-way connections"^[1]
DB25
1	In 1/2 +	Out 7/8 +	In/Out 8 +
2	In 3/4 +	Out 7/8 GND	In/Out 8 GND
3	In 5/6 +	Out 5/6 -	In/Out 7 -
4	In 7/8 +	Out 3/4 +	In/Out 6 +
5	Out 1/2 +	Out 3/4 GND	In/Out 6 GND
6	Out 3/4 +	Out 1/2 -	In/Out 5 -
7	Out 5/6 +	In 7/8 +	In/Out 4 +
8	Out 7/8 +	In 7/8 GND	In/Out 4 GND
9	n/c	In 5/6 -	In/Out 3 -
10	GND	In 3/4 +	In/Out 2 +
11	n/c	In 3/4 GND	In/Out 2 GND
12	GND	In 1/2 -	In/Out 1 -
13	GND	n/c	n/c
14	In 1/2 -	Out 7/8 -	In/Out 8 -
15	In 3/4 -	Out 5/6 +	In/Out 7 +
16	In 5/6 -	Out 5/6 GND	In/Out 7 GND
17	In 7/8 -	Out 3/4 -	In/Out 6 -
18	Out 1/2 -	Out 1/2 +	In/Out 5 +
19	Out 3/4 -	Out 1/2 GND	In/Out 5 GND
20	Out 5/6 -	In 7/8 -	In/Out 4 -
21	Out 7/8 -	In 5/6 +	In/Out 3 +
22	GND	In 5/6 GND	In/Out 3 GND
23	GND	In 3/4 -	In/Out 2 -
24	GND	In 1/2 +	In/Out 1 +
25	GND	In 1/2 GND	In/Out 1 GND

Pin	Signal	Pin	Signal	Pin	Signal
Lynx AES16(e) Digital I/O Pinout using HD26^[7]
1	Clock Gnd	10	Clock
2	Out Ch 8 -	11	Out Ch 8 +	19	Out Ch 8 GND
3	Out Ch 7 GND	12	Out Ch 7 -	20	Out Ch 7 +
4	Out Ch 6 -	13	Out Ch 6 +	21	Out Ch 6 GND
5	Out Ch 5 GND	14	Out Ch 5 -	22	Out Ch 5 +
6	In Ch 4 -	15	In Ch 4 +	23	In Ch 4 GND
7	In Ch 3 GND	16	In Ch 3 -	24	In Ch 3 +
8	In Ch 2 -	17	In Ch 2 +	25	In Ch 2 GND
9	In Ch 1 GND	18	In Ch 1 -	26	In Ch 1 +

Pin	Signal	Pin	Signal	Pin	Signal
DD50 — AES-2id "High-density AES connections"^[2]
1	Chassis
2	Ch 1 –	18	Ch 1 +	34	Ch 1 GND
3	Ch 2 GND	19	Ch 2 –	35	Ch 2 +
4	Ch 3 –	20	Ch 3 +	36	Ch 3 GND
5	Ch 4 GND	21	Ch 4 –	37	Ch 4 +
6	Ch 5 –	22	Ch 5 +	38	Ch 5 GND
7	Ch 6 GND	23	Ch 6 –	39	Ch 6 +
8	Ch 7 –	24	Ch 7 +	40	Ch 7 GND
9	Ch 8 GND	25	Ch 8 –	41	Ch 8 +
10	Ch 9 –	26	Ch 9 +	42	Ch 9 GND
11	Ch 10 GND	27	Ch 10 –	43	Ch 10 +
12	Ch 11 –	28	Ch 11 +	44	Ch 11 GND
13	Ch 12 GND	29	Ch 12 –	45	Ch 12 +
14	Ch 13 –	30	Ch 13 +	46	Ch 13 GND
15	Ch 14 GND	31	Ch 14 –	47	Ch 14 +
16	Ch 15 –	32	Ch 15 +	48	Ch 15 GND
17	Ch 16 GND	33	Ch 16 –	49	Ch 16 +
				50	Chassis

Pin	Signal	Pin	Signal	Pin	Signal
DD50 — Quartz^[3]
1	Ch 1 GND	18	Ch 1 –	34	Ch 1 +
2	Ch 2 +	19	Ch 2 –	35	Ch 2 GND
3	Ch 3 GND	20	Ch 3 –	36	Ch 3 +
4	Ch 4 +	21	Ch 4 –	37	Ch 4 GND
5	Ch 5 GND	22	Ch 5 –	38	Ch 5 +
6	Ch 6 +	23	Ch 6 –	39	Ch 6 GND
7	Ch 7 GND	24	Ch 7 –	40	Ch 7 +
8	Ch 8 +	25	Ch 8 –	41	Ch 8 GND
9	Ch 9 GND	26	Ch 9 –	42	Ch 9 +
10	Ch 10 +	27	Ch 10 –	43	Ch 10 GND
11	Ch 11 GND	28	Ch 11 –	44	Ch 11 +
12	Ch 12 +	29	Ch 12 –	45	Ch 12 GND
13	Ch 13 GND	30	Ch 13 –	46	Ch 13 +
14	Ch 14 +	31	Ch 14 –	47	Ch 14 GND
15	Ch 15 GND	32	Ch 15 –	48	Ch 15 +
16	Ch 16 +	33	Ch 16 –	49	Ch 16 GND
17	GND			50	GND

Notes and references

↑ 1.0 1.1 1.2 AES59-2012 Audio Engineering Society, Standard 59 — Audio application of 25-way D-type connectors in balanced circuits
↑ 2.0 2.1 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)
↑ 3.0 3.1 Quartz Q1602 small router system
↑ Bluefish AES breakout cable
↑ Aviom DB25 pinout information
↑ 6.0 6.1 AES/EBU & Analog DB25 Pinouts
↑ Lynx Studio Technology, Inc. AES16 pinout

v t e Audio and video connectors

Analog audio	Banana plug Binding post D-subminiature Euroblock DIN Mini-DIN Phone connector RCA Speaker spring terminal Speakon XLR

Digital audio	BNC D-sub S/PDIF TOSLINK XLR

Video	BNC Component RGB Component YPbPr Composite video D-Terminal DB13W3 DFP DIN Mini-DIN DMS-59 LFH DVI Mini-DVI Micro-DVI RCA S-Video VGA Mini-VGA

Audio and video	ADC Belling-Lee EVC F HDBaseT HDMI DisplayPort mDP MHL Minijack P&D PDMI SCART Thunderbolt

Visual charts	List of video connectors

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