RIAA-trinn med USB ut for overføring til datamaskin fra Pro-Ject

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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.

» Tekniske data

Input impedance MC 100 ohms / MM 47k ohms
Load capacity
Gain MM or high output MC: 40 dB
low output MC: 60 dB & Line: 11dB
Signal to noise ratio MM /MC 94dB / 75dB (A weighted)
THD MM / MC < 0,01% / < 0,05%
RIAA accuracy within 0,5dB/20Hz - 20kHz
Analogue inputs RCA (Phono) / 3,5mm jack (Line)
Analogue output voltage 9,5V (RCA)
A/D converter 16-Bit Delta Sigma
Sampling-frequencies 32, 44,1 & 48kHz
USB interface USB1.1, Mini B (cable included)
Power supply 18V/500mA DC; 220 - 240V, 50Hz
Power consumption 100mA DC < 1 watt standby
Dimensions W x H x D (D with sockets) 103 x 36 x 104 (115)mm
Weight 580g without power supply
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