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Technolink TC-780i MOBILE
Stereo Line Level Amp / Booster
Our TC-780i is specifically designed to allow easy connection of an iPod, MP3 player, Discman or virtually any other portable source to a car audio system. It can also be installed in boats, motorhomes or any other place where 12VDC is available. With the optional AC adaptor, it can be used in the home as well.


$36.50 plus shipping (see below)

The TC-780i is a tiny (3" x 1.75" x .75") stereo line preamp designed for either mobile or home use. Most users will use it to connect a MP3 player, iPod or other portable audio player to an existing car stereo. Doing so is simply a matter of plugging the player into the front panel jack, and adjusting the level control for best  balance. Because the TC-780i provides considerable gain, it can correct level mismatch issues that often cause portable players to be lower in volume than other sources. A second rear panel  input (selected automatically when nothing is plugged into the front input) allows the TC-780i to be used even in situations where all available inputs are already occupied. The mobile installation hardware included allows mounting either over, under or in most dashboards. The underdash bracket can also be used to attach to a in-home stereo cabinet or entertainment center, or the TC-780i can simply be set on a shelf.

  What's Included
  • TC-780i with integrated input / output cables
  • Two interchangeable faceplates (in-dash and under-dash)
  • Mounting bracket with side screws and allen wrench
  • DC cord for mobile installation
  • Mini/mini-plug cord for iPod / MP3 connection
  • Mini /sub-mini adaptor (for use with sub-mini HP jacks)
  • Stick-on rubber feet for in-home use


TC-780i box


  • S/N ratio: > 90dB
  • Input sensitivity: 100 mV
  • Input impedance: 30kΩ
  • Max output before clipping: 2.3 Volts p/p
  • Output impedance: 2kΩ
  • Gain; 10dB (with trimmer and output control set fully CW)
  • Distortion: 0.1% (at 100mV input / 300mV output)
  • Frequency response: 20–20 kHz +/-0.5 dB
To view our installation /application manual page containing usage and wiring diagrams, sample install pictures, mounting ideas and methods, and much more related to the use of this product, CLICK HERE.

The TC-780i measures 72mm long by 45mm deep by 20mm high
(imagine a credit card with the thickness of a 9V battery).


The under-dash front faceplate measures 75mm long by 22mm high.

The in-dash front faceplate 
measures 94mm long by 30mm high.
optional AC
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$36.50 plus shipping
  • US Priority Mail shipping is $6.00
  • Canada USPS shipping is $11.00
  • Worldwide USPS shipping is $17.00
Items shipped outside the USA may be subject to import duty, fees and tariffs as determined by the destination country; these  costs are usually collected at the time of  delivery and are the buyer's liability. We do not mark merchandise as "gifts" or otherwise falsify customs declarations.