EAR 834L Pre-Amplifier | Pre-Owned

The EAR 834L is a distinguished valve-based line preamplifier designed by Tim de Paravicini under Esoteric Audio Research (EAR). Celebrated for its minimalist yet robust design, the 834L features a classic 'de Paravicini circuit' utilizing three double triode valves (two ECC82/12AU7 and one ECC83/12AX7) to deliver a warm, detailed, and engaging sound signature.

This preamplifier offers five line-level RCA inputs and a genuine tape monitoring circuit, totaling six inputs. The Deluxe version enhances this with additional outputs for bi-amping systems and a neon power monitor light. Both versions are equipped with high-quality volume control and gold-plated input/output terminals, ensuring durability and minimal signal degradation.

The EAR 834L is designed to complement EAR's 834P phono preamplifier and power amplifiers, but it also integrates seamlessly with other high-quality source or power amplifiers. Its pure DC power supply, featuring a high-quality toroidal transformer, ensures minimal AC ripple, contributing to the unit's exceptional performance.

Available in Classic (black box) and Deluxe (chrome and gold finish) specifications, the EAR 834L stands as a testament to Tim de Paravicini's commitment to high-fidelity audio, offering audiophiles a preamplifier that combines timeless design with modern performance.

Specifications

• Type: Valve-based line preamplifier

• Valve Complement: 2 ECC82 (12AU7), 1 ECC83 (12AX7)

• Inputs:

  • 5 RCA line-level inputs

  • 1 Tape monitoring circuit (total of 6 inputs)

• Outputs:

  • 1 RCA main output

  • 1 Tape output (Deluxe version adds extra outputs for bi-amping)

• Volume Control: High-quality volume control fitted

• Power Switch: Panel-mounted power switch

• Terminals: Gold-plated input and output terminals

• Power Supply:

  • High-quality toroidal transformer

  • Double DC power supply for both low-tension (heater) and high-tension (anode) voltages

• Expected Valve Life: Minimum of five years of continuous operation

• Output Capability: Sufficient to drive any power amplifier (transistor or valve) and suitable for long interconnect cables

EAR 859 Power Amplifier (Each) | Pre-Owned

The EAR 859 is a distinguished single-ended triode (SET) power amplifier designed by the renowned Tim de Paravicini. This amplifier introduces the innovative Enhanced Triode Mode (ETM), a circuit that connects the control grid (G1) to the cathode, allowing the audio signal to enter through the screen grid (G2). This design enhances linearity and reliability compared to traditional triode amplifiers.

Utilizing the EL519 (or 6KG6) output tube, the EAR 859 delivers a robust 13 watts per channel in pure Class A operation. Its frequency response spans from 5 Hz to 50 kHz at 1 watt, ensuring a wide bandwidth and minimal distortion.

The amplifier's design is characterized by simplicity and elegance. It features a chrome front faceplate with gold knobs, a minimalist front panel with power switch, input selector, and volume control, and no remote control. Internally, the circuit is straightforward, with a few driver tubes and minimal components, reducing potential interference and preserving the purity of the signal path.

The EAR 859 has garnered acclaim worldwide for its musicality and transparency. It is particularly well-suited for high-efficiency speakers such as Tannoy, Altec, or Klipsch, where its 13-watt output can deliver dynamic and engaging performance.

Specifications

• Amplifier Type: Single-Ended Triode (SET) with Enhanced Triode Mode (ETM)

• Output Tubes: EL519 (also known as 6KG6)

• Power Output: 13 Watts per channel (pure Class A)

• Frequency Response: 5 Hz 50 kHz (1 dB at 1 Watt)

• Total Harmonic Distortion (THD): Typically less than 1% at rated power

• Input Sensitivity: Approx. 1 V RMS for full output

• Input Impedance: Around 47 k

• Output Impedance: 4 , 8 , and 16 taps available

• Signal to Noise Ratio: Typically better than 80 dB

• Dimensions: Approx. 300 mm (W) x 220 mm (D) x 125 mm (H)

• Weight: Approx. 8 kg (17.6 lbs)

• Power Consumption: Approx. 100 W

• Features:

  • Enhanced Triode Mode for improved linearity

  • Minimalist front panel with volume, input selector, and power switch

  • Chrome front fascia with gold knobs

  • No remote control (manual operation)