Whether you play guitar, bass, or keyboards, you need a direct box that won't diminish your instrument's tone, such as the Telefunken TDA-1 mono active direct box. Every aspect of this direct box is designed for maximum sonic integrity, from the Class A FET circuitry and custom-wound OEP/Carnhill output transformers to the gold-plated traces on the circuit board. You can expect warm and rich tone even after long cable runs, and the extruded aluminum enclosure ensures a long lifespan. When you need to convert an instrument-level signal to a mic-level signal, with sonic quality as your top priority, you'll be well served with the Telefunken TDA-1 direct box. Telefunken TDA-1 Mono Active Direct Box at a Glance: Converts instruments to mic-level signals without signal degradation Why are transformers important? Why is a direct box so important? Which is right for me, a passive or active direct box? Built to withstand