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Introduction
Congratulations on choosing our tube distortion unit — you have purchased one of the finest pedals
on the market today. This unit was developed using the expertise of professional sound engineers
and working musicians. You will find that your new NADY AUDIO TD-1 has superior performance and
greater flexibility than any other tube distortion pedal in its price range. Please read this manual
carefully to get the most out of your new unit.
Thanks for selecting NADY AUDIO as your choice for a tube distortion pedal.
Nady’s original TD-1 tube overdrive was marketed in the mid 1980’s and was one of the earliest tube
distortion pedals. The new, updated TD-1 combining classic tube overdrive warmth and tonality with
the latest advanced EQ and Tone control options, the TD-1 is capable of delivering almost any sound.
Its rich harmonics, unlimited tonal range, and unequalled definition make any amp sound great.
Introduction
• Real tube tone from the classic 12AX7A twin
triode tube — each carefully selected for
optimum tonality and absence of noise,
microphonics, and other artifacts that can
detract from your sound
• State-of-the-art 3-stage variable tube drive
design for widest range of overdrive options,
from mild growl and crunch to singing sustain
and controlled feedback
• Advanced EQ section carefully designed for all
contemporary styles — blues, jazz, country, R
& B, and all types of rock — with specially
tailored high and mid-low 3-stage variable
shelving and boosting options, plus a variable
presence control for the ultimate tone-shaping
possibilities
• Compact enough for a pedal board
• Rugged 14-gauge steel housing and heavy-
duty bypass footswitch for years of trouble-free
performance
1) LEVEL
The Level control adjusts the overall signal
output level.
2) DRIVE
The Drive control adjusts the amount of
distortion. It’s able to drive the tube with over
70dB of gain. The distortion input gain can also
be adjusted using the DRIVE GAIN switch.
3) DRIVE GAIN
This switch selects the boost of the input gain
and amount of overall distortion.
HIGH +22dB, MED +10dB, LOW 0dB
4) HIGH
This control adjusts the treble frequencies of the
signal post distortion. It boosts/cuts by
+/- 15dB @ 10KHz from mid position (12:00).
5) HIGH END
This switch boosts/cuts the brightness/treble
(10KHz) of the tone post distortion.
HIGH +5dB, MED 0dB, LOW –10dB
6) LOW
This control adjusts the low/mid tones of the
signal post distortion. It boosts/cuts by
+/-15dB @ 100Hz from mid position (12:00).
Controls and Connections
7) MID BOOST
This switch boosts the midrange frequencies
(270Hz-700Hz)of the signal for a fatter sound.
HIGH +12dB, MED +6dB, LOW 0dB
8) PRESENCE
This control adjusts the hi-treble frequencies of
the signal. It boosts/cuts by +/-5 dB from mid
position (12:00).
9) POWER ADAPTER JACK
10) OUTPUT
Connected to amplifier.
11) ON/OFF SWITCH
This switches between the effected signal (ON)
and the uneffected (bypassed) signal (OFF).
When in Bypass mode the input is connected
directly to the output.
12) ON/OFF LED
When the LED lights GREEN, the signal goes
through the TD-1 distortion (ON). When the
LED is RED, the signal is bypassed (OFF).
13) INPUT
Connected to guitar / bass / audio source.
Change the tube only after noticing a marked degradation in audio. The TD-1 is designed to provide
years of quality operation before the tube might need to be changed.
Tube Replacement
1. Remove the top panel knobs carefully, to
avoid damage, by pulling straight off.
2. Remove all nuts and washers for the footswitch
and potentiometers.
3. Remove all screws - 8 screws from the bottom
panel, 2 screws from each side panel.
4. Remove Input jack nut.
5. Remove Input side panel by pulling directly off.
6. Remove top panel by pulling directly up.
7. Carefully remove the 12AX7A tube by gently
wiggling the tube back a forth while pulling it
out from the socket.
8. Replace the tube.
10. Reassemble the TD-1 in reverse order of
disassembly making sure not to over tighten
any nuts or screws.
