De Paravicini - Ear Yoshino, professional audio equipment, UK E.A.R.-Yoshino 834 L De luxe Preamplificatore a valvole di linea

The EAR 834L line preamplifier is designed to complement any of the EAR 834P phono preamplifiers and an EAR power amplifier or, indeed, any other high quality source or power amplifier.

It has facilities for up to five line inputs, and offers a genuine tape monitoring circuit, making a total of six inputs. A high quality volume control is fitted, as well as a panel mounted power switch. Input and output terminals are gold plated.

Designed by Tim de Paravicini in his usual robust style, the EAR 834L is the perfect match for any high end system, whether biased towards analogue or digital. The electronic architecture is minimalist, so that the absolute minimum sonic degradation takes place. There are three double triode valves, arranged in a classic ‘de Paravicini circuit’. Special attention has been given to the input circuitry. All inputs are at the rear of the chassis, on the same circuit board as the selector switches, which are operated remotely by long control shafts.

The power supply is a unique arrangement; a high quality toridal transformer feeds a double DC power supply, that provides the low-tension (LT) heater current, and the high-tension (HT) anode voltage. It is critical in a preamplifier that both the HT and LT supplies are pure DC, and free from AC ripple. This is the case with all EAR products, not just this preamplifier.

The circuit is designed used in such a way as to have a minimum life of five years* continuous operation for the valves.

The preamplifier has more than enough output for any power amplifier, transistor or valve, and is ideal for driving long interconnect cables to remotely located power amplifiers.

The unit is available in Classic and Deluxe specification. Deluxe builds on the Classic’s specification with a superior chrome and gold finish, with extra outputs to facilitate bi-amping systems, and a neon power monitor light.
Caratteristiche  Tecniche
Sensibilità d'ingresso per 1 volt di uscita 200mV (0.2 volt)
Uscita massima 30 Volt
Rapporto segnale/disturbo -80 dB(IHF)
Valvole: valvole 1 & 3 2 x ECC82 or 12AU7 or equivalent
Valvole: valvola 2 1 x ECC83 or 12AX7 equivalent

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