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12 February 2025

SONIFEX TELEPHONE BALANCE UNITS

31 items

These telephone balance units automatically compensate for variable line resistance and reactance whilst the line is connected. All units in the range are fully approved by BABT with “green dot” approval S/3619/23/L/501792 and are compliant with European PTT specifications.

HY-03 Analogue telephone hybrid

DHY-04 DSP based telephone hybrid

DHY-04V VoLTE hybrid

DHY-04G DSP based GSM hybridDiscontinued

DHY-04HD DSP based HD voice and GSM hybridDiscontinued

Specifications:
HY-03 DHY-04 DHY-04V DHY-04G DHY-04HD
Input impedance, Line mode (1) 10kohm 10kohm 10kohm 10kohm 10kohm
Input impedance, Mic mode 200ohms 2kohms 2kohms 2kohms 2kohms
Clean feed limiting input +4dBu -4dBu -4dBu -4dBu -4dBu
Bandwidth to telephone line (2) 250Hz - 4kHz 250Hz - 4kHz - - -
Output impedance, analogue 50ohms 50ohms 50ohms 50ohms 50ohms
Output impedance, digital - 110ohms 110ohms 110ohms 110ohms
Output level range +8dB to -14dB +6dB, 0dB, -6dB +6dB, 0dB, -6dB +6dB, 0dB, -6dB +6dB, 0dB, -6dB
Rejection ratio 45dB 80-88dB - 80-88dB -
Connections;
Mic/line/AES-EBU in (3) 3-pin female XLR 3-pin female XLR 3-pin female XLR 3-pin female XLR 3-pin female XLR
Line/AES-EBU out (3) 3-pin male XLR 3-pin male XLR 3-pin male XLR 3-pin male XLR 3-pin male XLR
Ethernet - RJ45 RJ45 RJ45 RJ45
GSM Antenna - - SMA SMA SMA
Telephone line RJ11 6/4 RJ11 6/4 - - -
Telephone handset/instrument RJ11 6/4 RJ11 6/4 - - -
Conference or record audio - RJ45 RJ45 RJ45 RJ45
Remote 9-way D-type 9-way D-type 9-way D-type 9-way D-type 9-way D-type
RS232 - 9-way D-type 9-way D-type 9-way D-type 9-way D-type

Notes: (1) clean feed at 0dB, balanced; (2) -3dB ref 1kHz; (3)

Description Price $
ex. VAT
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SONIFEX HY-03 TELEPHONE BALANCE UNIT Analogue, single, desktop Stock code: 28-311
Ordered on demand, cancellations may incur charges, available in 4‑6 weeks. Need it sooner? Call us
$974.78
SONIFEX HY-03S TELEPHONE BALANCE UNIT Analogue, single, rackmount Stock code: 28-312
Ordered on demand, cancellations may incur charges, available in 4‑6 weeks. Need it sooner? Call us
$986.98
SONIFEX HY-03T TELEPHONE BALANCE UNIT Analogue, twin, rackmount Stock code: 28-313
Ordered on demand, cancellations may incur charges, available in 1‑2 months. Need it sooner? Call us
$1,878.80
SONIFEX HY-03SCON PANEL CONVERSION KIT Converts HY-03 to HY-03S Stock code: 28-315
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$63.39
SONIFEX HY-03TCON PANEL CONVERSION KIT Converts HY-03/HY-03S to HY-03T Stock code: 28-316
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$75.59
SONIFEX HY-03CON PANEL CONVERSION KIT Converts HY-03S to HY-03 Stock code: 28-317
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$51.19
SONIFEX DHY-04 TELEPHONE BALANCE UNIT Digital, single, AES/EBU, Ethernet, desktop Stock code: 28-341
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$1,720.20
SONIFEX DHY-04S TELEPHONE BALANCE UNIT Digital, single, AES/EBU, Ethernet, rackmount Stock code: 28-342
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$1,732.40
SONIFEX DHY-04T TELEPHONE BALANCE UNIT Digital, twin, AES/EBU, Ethernet, rackmount Stock code: 28-343
Ordered on demand, available in 3‑5 working days. Need it sooner? Call us
$3,379.40
SONIFEX DHY-04V TELEPHONE BALANCE UNIT Single, digital, 4G hybrid, AES/EBU, desktop Stock code: 28-301
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$1,903.20
SONIFEX DHY-04VS TELEPHONE BALANCE UNIT Single, digital, 4G hybrid, AES/EBU, rackmount Stock code: 28-302
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$1,915.40
SONIFEX DHY-04VT TELEPHONE BALANCE UNIT Twin, digital, 4G hybrid, AES/EBU, rackmount Stock code: 28-303
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$3,733.20
SONIFEX DHY-04VUP TELEPHONE BALANCE UNIT Upgrade for DHY-04G/DHY-04HD Stock code: 28-306
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$816.18
SONIFEX DHY-04VCON PANEL CONVERSION KIT Converts DHY-04VS to DHY-04V Stock code: 28-307
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$57.29
SONIFEX DHY-04VSCON PANEL CONVERSION KIT Converts DHY-04V to DHY-04VS Stock code: 28-308
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$63.39
SONIFEX DHY-04VTCON PANEL CONVERSION KIT Converts DHY-04V/DHY-04VS to DHY-04VT Stock code: 28-309
Ordered on demand, available in 4‑6 weeks. Need it sooner? Call us
$75.59

Discontinued products

SONIFEX DHY-04G TELEPHONE BALANCE UNIT Digital, GSM hybrid, single, AES/EBU, Ethernet, desktop Stock code: 28-344
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-04GS TELEPHONE BALANCE UNIT Digital, GSM hybrid, single, AES/EBU, Ethernet, rackmount Stock code: 28-345
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-04GT TELEPHONE BALANCE UNIT Digital, GSM hybrid, twin, AES/EBU, Ethernet, rackmount Stock code: 28-346
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-04HD TELEPHONE BALANCE UNIT Digital, HD, single, AES/EBU, Ethernet, desktop Stock code: 28-347
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-04HDS TELEPHONE BALANCE UNIT Digital, HD, single, AES/EBU, Ethernet, rackmount Stock code: 28-348
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-04HDT TELEPHONE BALANCE UNIT Digital, HD, twin, AES/EBU, Ethernet, rackmount Stock code: 28-349
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX HY-03DTD EXPANSION BOARD Dial tone detect, for HY-03 Stock code: 28-314
No longer manufactured. Unfortunately we are not currently able to offer an alternative.
SONIFEX DHY-03 TELEPHONE BALANCE UNIT Digital, single, desktop Stock code: 28-321
No longer manufactured. See the product page for suggested alternatives.
SONIFEX DHY-03S TELEPHONE BALANCE UNIT Digital, single, rackmount Stock code: 28-322
No longer manufactured. See the product page for suggested alternatives.
SONIFEX DHY-03T TELEPHONE BALANCE UNIT Digital, twin, rackmount Stock code: 28-324
No longer manufactured. See the product page for suggested alternatives.
SONIFEX DHY-03EC TELEPHONE BALANCE UNIT Digital, single, Eurocard Stock code: 28-325
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-03CONF CONFERENCE CABLE To connect 2x DHY03S Stock code: 28-328
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-03SCON PANEL CONVERSION KIT Converts DHY-03 to DHY-03S Stock code: 28-326
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-03TCON PANEL CONVERSION KIT Converts DHY-03/DHY-03S to DHY-03T Stock code: 28-327
No longer manufactured. Please contact Technical Support for alternatives.
SONIFEX DHY-03CON PANEL CONVERSION KIT Converts DHY-03S to DHY-03 Stock code: 28-320
No longer manufactured. Please contact Technical Support for alternatives.