Tc Electronic C33 does in fact have S/pdif.
I pulled out the old lexicons they conect s/pdif fine but only @ 44.100.
TC Electronic C300 Specifications
Digital Input and Output
Connector: RCA Phono (S/PDIF)
_Formats: S/PDIF (24 bit), EIAJ CP-340, IEC 958_
_Sample Rates: 48 kHz. (44.1 kHz only @ Digital Input)_
Processing Delay: 0.08 ms @ 48 kHz
Frequency Response DIO: DC to 23.9 kHz ± 0.01 dB @ 48 kHz
Analog Inputs
Connectors: Quarter-inch phone jack balanced-unbalanced
Impedance: 20 kOhm - 11 kOhm (balanced; unbalanced)
Maximum Input Level: +21 dBu (@ 0 dBFS)
A to D Conversion: 24 bit, 128 x oversampling bitstream
A to D Delay: 0.9 ms @ 48 kHz
Dynamic Range: Typ < -110 dB, 22 Hz to 22 kHz
THD: Typ < -102 dB (0.0008 %) @ 1 kHz, -1 dBFS
Frequency Response: +0/-0.1 dB, 20 Hz to 20 kHz
Crosstalk: Typ < -115 dB, 20 Hz to 20 kHz
Analog Outputs
Connectors: Quarter-inch phone jack unbalanced. Ground sensing design
Impedance: 35 Ohms
Maximum Output Level: +21 dBu
D to A Conversion: 24 bit, 128 x oversampling bitstream
D to A Delay: 0.58 ms @ 48 kHz
Dynamic Range: Typ < -110 dB typ, 22 Hz to 22 kHz
THD: typ < -94 dB (0.002 %) @ 1 kHz, +21 dBu
Frequency Response: +0/-0.1 dB, 20 Hz to 20 kHz
Crosstalk: Typ < -100 dB, 20 Hz to 20 kHz
EMC
Complies with: EN 55103-1 and EN 55103-2 FCC part 15, Class B, CISPR 22, Class B
Safety
Certified to: IEC 65, EN 60065, UL6500 and CSA E60065
Environment
Operating Temperature: 32° F to 122° F (0° C to 50° C)
Storage Temperature: -22° F to 167° F (-30° C to 70° C)
Humidity: Max. 90% non-condensing
Control Interface
MIDI: In/Out: 5 Pin DIN
General
Finish: Anodized aluminum front. Plated and coated steel chassis
Meter: 2 x 6 LED's in each channel
Dimensions: 19 x 1.75 x 4.2 inches (483 x 44 x 105.6 mm)
Weight: 3.3 lbs (1.5 kg)
Mains Voltage: 100 to 240 VAC, 50 to 60 Hz (auto-select)
Power Consumption: <15 W