AudioDesign ProBox15 datablad
ProBox 15
24bit-96kHz Delta-Sigma
D/A Converter
The Probox 15 uses the latest surface mount technology to
provide a cost effective, high quality D to A converter, using
delta-sigma technology to give an up to date, very linear phase
response DAC. The result is a smooth, transparent sound of
exceptional quality with an analogue noise floor of < -117dB
and a distortion measurement of < 0.0016%
AES, Co-axial (phono) and Optical inputs are provided with
front panel input selection. A fully regenerated AES output of
the AES input signal, including Status and User subcodes is fed
to a separate connector (loop through) on the rear panel. Full regeneration provides a lower jitter than simple electrical
buffering can provide.
The analogue outputs are electronically balanced and have a
variable output range from 0dBm to + 20dBm (via multi-turn
presets accessed through the rear panel). Audio Line Output
Transformers may be fitted as an optional extra.
Status LED's on the front panel indicate:a) whether the digital input has locked to a good incoming signal
b) if pre-emphasis is present - note that the signal is then deemphasised digitally for correct analogue output.
c) if data errors occur resulting in high CRC, parity or bi-phase
coding errors.
d) sample rate - 32kHz, 44.1kHz, 48kHz, 88.2kHz or 96kHz
The front panel controls can be "locked out" via a recessed slide
switch, to prevent operational or accidental tampering.
For more product information, contact Audio Design on:
Tel: +44 (0)118 984 4545; Fax: +44 (0)118 984 2604
e-mail:, web:
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
- pro audio with a smile
PROBOX-15 24bit-96kHz
AES I/P Section
1 balanced input (XLR-F)
Input impedance: Transformer balanced - 110Ω
Input level sensitivity: better than 200mV
AES O/P Section
1 balanced output (XLR-M) - loop through
Output impedance: Transformer balanced - 110Ω
Fully re-generated signal including Status and User subcodes
DC Offset: <50mV
SP/DIF Section
1 unbalanced input (RCA jack / phono)
Input impedance: Unbalanced - 75Ω
Input level sensitivity: better than 100mV
1 Toslink optical input
Input level sensitivity: 200mV
Electronically balanced outputs - Transformer option available
Output impedance: > 50Ω
Output level: rear panel multiturn potiometers, user adjustable 0dBm to + 20dBm
THD + noise: < 0.0016% (-95dBm)
Noise with Digital Silence: ref. +20dBm = -117dB, ref. 0dBm
Crosstalk at 20kHz: <100dB ref. +20dBm @ 48kHz
Frequency Response: 20Hz to 20kHz ±0dB to -0.2dB @ 44.1kHz or above
AES or SP/DIF protocol via XLR, Co-axial or Optical Toslink connectors.
Input sample rate frequency range: 30kHz to 100kHz.
Operation sample rates: 32, 44.1, 48, 88.2, 96kHz
90 - 250V / 45 - 65 Hz, IEC inlet with on/off rocker switch
Fuse: 3 Amp anti-surge
Front panel: 482.60mm (19") width x 44.45mm (1U rack) high
Unit: 431.80mm (17") wide x 44.45mm high x 163mm deep
Any queries, call Audio Design on +44 (0)118 984 4545, Fax +44 (0)118 984 2604
or e-mail:
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
- pro audio with a smile
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