Check the listing for details. AEA TDI Direct Box (Phantom-Powered). Condition: New. Listed at 299.00 USD. AEA TDI Direct Box (Phantom-Powered) With a proprietary circuit design by Fred Forssell and a superclean Lehle step-down transformer, the ultra-transparent TDI can capture outstanding sonic performances with minimal distortion, noise interference, and signal loss from long cable runs. Super clean and musical circuit design Compact, road-ready design with rugged durability 20 dB pad, ground lift switch, and paralleled throughput Made in the U.S.A. The phantom-powered TDI offers a passive THRU-put connection which allows the user to send incoming instrument signal to other instrument-level sources (amplifiers, pedals, etc.). This throughput feature, paralleled to the INPUT, is also useful for simultaneous wet/dry signal tracking. The TDI pairs well with passive instruments (i.e. guitars, basses, piezo pickups) but, with a 20 dB pad, it can also handle signals from active instruments, synths, or speakers. Listing and template services provided by inkFrog