Telefunken TDA-1 – Active Mono DI Box with Custom-Wound Transformer
The Telefunken TDA-1 is a high-headroom, premium-grade active DI (Direct Injection) box built for the demands of studio recording, live sound, and touring applications. Combining modern electronics with Telefunken’s renowned analog craftsmanship, the TDA-1 delivers crystal-clear signal integrity with exceptional dynamic range and ultra-low noise performance.
Unlike passive DI boxes, the TDA-1 features an active circuit design that provides optimal impedance matching and gain structure—ideal for passive instruments such as electric guitars, basses, or piezo pickups. At its core is a custom-wound Telefunken transformer that delivers classic warmth and balance, while galvanic isolation eliminates ground loops and hum.
Housed in a rugged, road-ready chassis, the TDA-1 is built to perform in even the most demanding environments. With its premium components, durable build, and pristine signal path, this DI box is trusted by professionals for capturing tone with absolute fidelity.
Key Features:
- Active mono DI box for professional studio and live use
- Custom Telefunken transformer for warm, accurate tone
- Active circuit provides enhanced signal clarity and headroom
- Transformer-isolated output eliminates hum and ground loops
- Thru jack for amp or monitoring connection
- Requires 48V phantom power (no batteries)
- Built in the USA with premium components and rugged construction
Technical Specifications:
- Type: Active DI Box
- Input: 1 x 1/4″ TS instrument
- Thru: 1 x 1/4″ TS (parallel output)
- Output: 1 x balanced XLR (transformer-isolated)
- Power: 48V phantom power required
- Frequency Response: 20 Hz – 20 kHz ±1 dB
- Input Impedance: 1MΩ
- Output Impedance: 150Ω
Why Choose the Telefunken TDA-1?
Whether you’re on stage or in the studio, the TDA-1 delivers the clarity, tone, and reliability professionals demand. Its active design is perfect for passive instruments, and the renowned Telefunken transformer adds warmth and definition that stand out in any mix. Built to last and engineered for sonic excellence, the TDA-1 is a smart upgrade to any signal chain.
Experience precision and power in a compact package—choose the Telefunken TDA-1 Active DI Box.