Tegeler Audio Classic Equalizer EQP-1 - Passive Tube Program Equalizer
The Tegeler Audio Classic Equalizer EQP-1 is a faithful recreation of the legendary Pultec EQP-1A program equalizer in a modern, hand-built 2U rack unit. Featuring NOS tubes, custom transformers, and passive LC circuitry, it delivers the iconic Pultec sound: simultaneous low-frequency boost and cut for signature punch, silky high-frequency boosts, and warm, musical tone shaping. With stepped controls for precise recall and transformer-balanced I/O, the EQP-1 is the ultimate tool for vocals, instruments, mix bus, and mastering, bringing vintage analogue magic to professional studios.
Classic Pultec EQ Circuit
The EQP-1 uses a passive LC filter network followed by a tube make-up gain stage (ECC83/ECC82) to achieve the famous Pultec character. Low-frequency boost and attenuate controls create the legendary “Pultec punch” by boosting lows while simultaneously cutting overlapping frequencies for weight without mud. High-frequency boost adds air and shimmer with broad, musical curves, while the high-shelf attenuation tames harshness with precision.
Premium Analog Components
Hand-selected NOS tubes and custom-wound transformers provide rich harmonics and smooth saturation. The stepped frequency and gain controls ensure perfect stereo matching and easy recall, while the true bypass switch allows instant comparison. The internal linear power supply and high-headroom design deliver clean, transparent operation with the warmth and depth that define classic Pultec sound.
Key Features of the Tegeler Audio Classic Equalizer EQP-1
- Faithful Pultec EQP-1A recreation with NOS tubes
- Low-frequency boost and attenuate for “Pultec punch”
- High-frequency boost and attenuation with broad musical curves
- Stepped controls for accurate recall and stereo matching
- Passive LC filter network with tube make-up gain
- Custom-wound input/output transformers
- True bypass switch for A/B comparison
- Balanced XLR I/O throughout
- Internal linear power supply
- Hand-built in Germany
Technical Specifications
- Type: Passive tube program equalizer
- Tubes: ECC83/ECC82 (NOS)
- Transformers: Custom-wound input/output
- Max Input/Output Level: +24 dBu
- Frequency Response: 10 Hz–60 kHz (±0.5 dB)
- THD+N: <0.05% (typical)
- Noise Floor:
- Power: Internal linear PSU, 115/230 V AC
- Dimensions: 19 × 3.5 × 11 in (482 × 88 × 280 mm)
- Weight: 11 lbs (5 kg)
