The THÖRESS Phono Enhancer MKIII achieves unparalleled acoustic accuracy through its vacuum tube circuitry. Its innovative design eliminates noise and distortion for pristine sound reproduction.The THÖRESS Phono Enhancer MKIII employs a single-ended zero-feedback topology that leverages the natural characteristics of vacuum tubes, providing a rich and warm sound profile. Constructed using meticulously arranged point-to-point wiring practices, this pre-amplifier minimizes electrical noise while maximizing signal integrity. The phono equalizer incorporates passively implemented RIAA de-emphasis, ensuring precise frequency response in the amplification of moving coil (MC) cartridges. By avoiding step-up transformers, the unit maintains a highly favorable signal-to-noise ratio, delivering detailed audio without unwanted artifacts. The designed imbalance due to tube variations is mitigated through careful selection and matching of components, ensuring that harmonic distortion levels remain minimal. Each input is specifically calibrated to accommodate different cartridge loading, which preserves dynamic range and clarity across a variety of playback scenarios.Key Features Single-ended zero-feedback topology: This design minimizes distortion and enhances dynamic range by allowing the natural tubes' characteristics to dominate the signal path. High signal-to-noise ratio: Utilizing a purely active operation mode eliminates the need for step-up transformers, preserving audio fidelity across the frequency spectrum. Three selectable phono inputs: Each with distinct loading characteristics, ensuring compatibility with a diverse range of cartridges without sacrificing gain level. Broad input impedance capabilities: Allows flexibility with various sources, providing optimal loading for classic and modern setups to enhance sound quality. Low output impedance: Facilitates long cable runs and maintains sound integrity, ensuring the signal remains unaltered even over distance. Pass-through output: Permits an easy integration with existing setups by providing an output for activated sources, allowing versatility without additional configurations. Technical Specifications SRP: $14999 Phono Gain (MC): 65dB @ 1kHz Phono Gain (MM): 45dB @ 1kHz Input Impedance (MC): 100, 200, 500 ohms Input Impedance (MM): 47K ohms Line Gain Input #6: 26dB (20-times), 80,000 ohms Line Gain Inputs #4 and #5: 18dB (8-times), 30,000 ohms Output Impedance: 300 ohms 3dB-down frequency response: < 5Hz
