zapco Reference Series 2 User Manual page 6

We also include with every model of amplifier our SLDIN-T.F
(transmitter line driver) providing a method of changing an unbalanced
signal to balanced and the ability to increase line level voltage up to 4-times
the output. The only accessory item to complete your system is the proper
length cable from the transmitter to the amplifier. Everyone will get
balanced...for free!
What's next? Only time will tell. But here's one thing you can count
on. As ZAPCO finds new ways to improve the state of the art, we will bring
them to you immediately, in all our products.
So! Enjoy this manual. We hope you will read it thoroughly. We
have tried to include all the necessary information for proper installation and
set up so that you can enjoy the full potential of your ZAPCO Reference
Series amplifier.
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