CONNECTING YOUR PREAMPLIFIER
1. Please refer to the following page for an illustration of the back of the preamplifier.
2. There are two main outputs per channel. These get connected to the power amplifier(s) when
all ON/OFF switches are off (including the amps). One pair is standard RCA unbalanced line
outputs and the other pair are balanced XLR outputs. Use either (the unbalanced RCA's are
more"purist")(The Balanced outputs have one more stage of amplification). The Balanced
outputs are the best choice to drive a second set of amplifiers in a different room. Use both
outputs for some bi-amp applications.
3. Use the RECORD OUTs to send to your tape recorder inputs. This output is derived from the
Input Select Switches. This output is buffered (another tube is used to isolate this jack) to
preserve signal integrity regardless of the load. We can recommend that one have the tape
feed plugged into the REC OUT only when actually recording especially if there are kids or
a spouse that may use the system with less respect. The main concern is selecting "TAPE"
when the tape deck is also reflecting that input and a little gain exists. If you switch to "tape"
at the preamp, when recording or if the deck is in "input" or "source" expect the howl of
feedback. Unfortunately "purist", "foolproof" and "comprehensive" are mutually exclusive.
This is normal for purist preamps that don't have a "tape monitor" switch or "record select"
switch. One eliminates extra "stuff" that might degrade the main signal path.
4. Normal line inputs are found on RCA jack inputs and can be connected to any line level
sources such as, tuners or tape decks. Each of the RCA jacks are clearly labelled as to a
typical function. Each input is for all intents functionally and electronically the same except
for the phono inputs and CD inputs. The CD inputs have 6 dB less gain because CD players
and DACs tend to have hot outputs. The phono inputs have much more gain and a frequency
response that the RIAA "curve" specifies. Connect you turntable to the moving magnet or
moving coil inputs depending on your cartridge. Don't forget to attach the turntable ground
wire to the gold ground post located between the moving magnet jacks. If you use an external
equalized phono preamp connect it to the line input of your choice.
5. There is one pair of balanced inputs with 3 pin XLR female jacks. Some newer components
allows the choice of balanced or unbalanced connection. We recommend careful listening
to determine whether the balanced or unbalanced connection is preferable. It is usually
subtle and depends on several factors. Some professional tape machines only have balanced
outputs and these would be the appropriate inputs. You may find that you want to reduce the
output level on a pro (+4dBm) tape machine to "match" your other (-10dBm) inputs.
6. Connect the two power supply cables from the power supply unit to the preamplifier.
Remember, AC power should be OFF at the power supply for for at least 5 minutes.
7. On the power supply back panel is a standard IEC mains connector. This should be connected
to a standard mains outlet with the supplied cable. This unit has been hard-wired for the
mains voltage in your country. Are you ready for music?
8. Power up the preamplifier FIRST at the POWER SUPPLY ON/OFF switch (LED glows)
and allow it to settle for a minimum of 30 seconds before powering up your amplifiers. Select
a source, turn up the volume and sit down (or dance!). Turn off your preamplifier and source
components LAST when powering down a system. (Amps on last and first off) This prevents
amplification of turn-on transients and other noises when powering up or turning a system
off and ultimately protects the speakers.
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