© Pro-Ject Audio Systems · Pro-Ject Debut Pro · Revision 2021.09.01
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Take care to connect the left and right channels correctly. The right channel is usually marked red, the left
channel black or white. Check the manual supplied with your amplifier for relevant information. The earthing
wire of the tonearm lead should be connected to the earth terminal on your amplifier.
If your amplifier does not have an input suitable for phono cartridges you will require a separate phono
amplifier stage for MM cartridges which is then connected between the record player and a free line level
input of the amplifier. A separate phono preamplifier can also be helpful if you want to upgrade your sound
experience, as external phono preamps are 100% dedicated to making your turntable sound as good as it
can possibly be. They are not limited by other restrictions typically found in integrated amplifiers, which are
almost always compromising sound quality a bit.
PRO Info: Phono Cable
The included Connect it E phono cable is a semi-balanced phono interconnect cable purpose-engineered
for best-in-class turntable performance. It is terminated with high-conductivity RCA connectors for a tight fit
that won’t come loose when you move your equipment. They’re 24k gold plated for optimum signal transfer
and corrosion resistance. The Connect it E cable is a parallel symmetrical cable where the shield is only
connected on one end. The yellow mark indicates this side. The marked side should always be connected to
the receiving end (i.e. phono stage or amplifier). It is pretty rare to find a cable of these high specifications
included with turntables, but they are absolutely necessary and so critical for phono performance, which is
why Pro-Ject Audio Systems is including them by default. There is no way you can do it without specialised
cables like that. If you wish, you can further substitute the supplied Connect it E with even higher quality cables
such as the separately available Pro-Ject Connect IT C, CC or Si.
For detailed product information regarding Pro-Ject Audio interconnect cables and phono amplifiers please
refer to the Pro-Ject web site
5. Mains power connection
The turntable is supplied with the universal power supply with 3 exchangeable sockets adapters suitable for
all countries. Select the correct adapter for your country and insert the adapter to the exchangeable part of
the power supply.
Connect the low voltage plug from the power supply to the socket (15) on the rear of the record player before
connecting the power supply to the mains.
PRO Info: Power Supply Upgrade
Your Debut PRO already has a speed control unit built in which at the same time already acts as a clean power
supply. The exact voltage and frequency for the motor are generated by this speed control unit, resulting in the
most accurate playback speeds. Upgrade power supplies (like the High Power it or Power Box DS2 Sources)
provide proper grounding and dramatically reduce ground
hum of „floating mass“ systems/amplifiers
.
Every turntable needs proper grounding, otherwise electrical hum may be induced. If a turntable is not properly
grounded, it may have a different reference potential than the connected amplifier. Consequently, these
potential differences induce a compensating current which can be heard as hum. Therefore, all good turntables
have a separate ground cable which can be connected to standard amplifiers or phono stages, which usually
have a ground terminal. This way different potentials are equalized and hum is no longer audible. However,
many modern amps, especially most amps of soundbars or streaming speakers have no ground connection.
These systems are referenced as
“floating mass systems“. If a standard turntable is connected to such a
„floating mass“ amplifier, audible hum will be the result.
The Power Box DS2 Sources is also a true linear power supply with a big toroidal transformer and will power
other Pro-Ject Audio Systems Box Design HiFi electronics as well.
