Pro-Ject A/D Phono Box S  

A/D converter for line & Phono with USB, analogue & digital out  


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open page Specifications       PDF Productinfo [pdf, 660 KB]       PDF User Manual [pdf, 125 KB]       

MM & MC capable  

Linear RIAA equalisation  

Phono stage technology by Dr. Sykora  

Line level input switchable  

Recording level control  

USB recording output to computer (PC & Mac)  

Digital optic output (Toslink), works while USB is connected  

Ultra low noise & low distortion levels  

SMD circuitry  

Metal casing protects against vibration and interference  

Faceplate silver or black  


High quality recording of analogue media on computers  


Our aim was to design a product which is very flexible and allows converting precious vinyl records or analogue tapes to computer. This digital copy acts as an undestroyable back up and archive of valuable and beloved audio collections and extends lifetime of rarity records and tapes.  

Storing music in computer offers the possibility of removing clicks, eliminating noise from old and wearing recordings. Data from computer can be burned on CD and also can be used in cars and with mobile devices as smartphones, tablets etc.  

But A/D Phono Box S has also other significant features: It allows to connect a turntable, tape deck or other source to devices which has no line input. Today some AVRs have only digital inputs and connecting of the turntable or tape deck seems to be impossible. The answer is A/D Phono Box S, which allows the connection of analogue devices via S/PDIF optical output. Optical output is only available, when USB connection is active.  

A front-sided input selector allows to select desired inputs: Phono or Line. Signal from selected input is present on analogue output. This function allows to connect A/D Phono Box S permanently in an HiFi system, use it as standard phono preamplifier and in case of need you can convert your records to digital data, stored in your computer. Record level adjustment is extremely helpful, because signal source scans significantly vary in level of their output voltage. Such big differences in voltage level can easily overload input of an A/D converter what is hearable as a distortion.  

On the other hand, if the A/D converter is not fed with proper level of the signal, the sound will loose resolution. This is the reason why level of the signal on ADC input must be set carefully. Due to its outstanding audio quality and valuable features, A/D Phono Box S is the perfect partner for recording of analogue sources.  


SRP: 199,00  


FAQ - Hints for using A/D Phono Box S  


Q: Does a driver exist for the A/D Phono Box S?  

A: You do not need a driver for Windows-, Mac OSX or Linux-Systems.  

The driver is already integrated in the operating system.  


Q: A/D Phono Box S will not be recognized by Mac OSX and is not available under Audio. What can I do?  

A: Turn off your Computer and press at start alt+cmd+p+r until another starting sound appears. With this command the USB bus will be reset and the USB Box will be recognized new.  


Q: Why is there no sound coming from my Apple computer when I am using the A/D Phono box S as a record source while the internal soundcard or the S/PDIF connection of the Apple computer is configured as playback source.  

A: For playback while recording at the Apple computer, the additional tool "LineIn" is necessary since OS X 10.  

"LineIn" is for free download available here:  


Q: Is it recommended to use the analogue output (Out) for listening, when a Line input source is connected to A/D Phono Box S?  

A: No. When using the Line input (3,5mm jack) on the A/D Phono Box S we do not recommend using the analogue RCA output to listen to the source. This input is only fully supported when transferring the audio signal over USB to a computer for recording. The RCA output is only for use with a turntable source that has been connected to the RCA phono input. 


Last update 18.07.2018

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