Prism Sound Callia
Prism Sound Callia
Prism Sound Callia

Prism Sound Callia

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CALLIA supports linear PCM in 2’s complement binary coding and, using the “DSD over PCM” (DOP) protocol, DSD at the original bit-rate (DSD64) and also at 2 x the original rate (DSD128). DSD Files encoded as “DOP” may be played with both ASIO and WDM drivers.

Your computer, tablet or transport will commonly decode formats such as mp3 to PCM prior to transmission to the sound card, so these formats will typically be supported on your device in the same manner as they would be with another sound card.

On the S/P-DIF inputs, DOP can also be used, but only at the original DSD bit rate (DSD64) as these connections do not have enough bandwidth for DSD128.

The ASIO native DSD format is not currently supported.


Table-top (including feet): 285 x 242 x 50mm


90VAC – 250VAC, 50 – 60Hz

15W consumption

0.5A(T), 20mm, glass


1 x USB Audio Device Class 2.0


1 x RCA for AES3-ID


2 x XLR (balanced)

2 x RCA (pseudo-balanced)

Input selection LEDs Indicate auto/manual select mode and current input: optical S/PDIF, RCA S/PDIF or USB.
Sample rate/format LEDs Indicate sample rate: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz,
(for fs>192k see note at foot of page),
DSD64 or DSD128
also indicates PCM word-length ‘> 16 bits’ (24b LED ON blue)
or ‘> 24 bits’ (24b LED ON pink).
Line volume control Controls the volume at the analog line outputs when enabled.
(See ‘REAR PANEL -> DIP switches’)
Halo setting indication.
Headphone output 6.3mm stereo jack socket, with illuminated volume control
Standby/source button Switches between operation and standby modes; also used for manual input selection (momentary press) and LED brigtness.
LED brightness

Hold Standby/source button down and twist Volume knob to adjust.

Analog line outputs Two XLR male for balanced connection; two RCA sockets for unbalanced connection
S/PDIF inputs RCA coaxial and TOSLINK optical formats
DIP switches Enable/disable line volume control, DSD headroom select, headphone impedance setting
USB port USB 2.0 B type device socket
Mains power 3-pin 6A IEC inlet

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