Conrad Johnson TEA1s2 Vacuum Tube Phono Stage New, Full Warranty

Snowdeal Sound is pleased to offer you one of the finest phono stages made today, the Conrad Johnson TEA1s2. This preamp represents one of the most well designed and flexible additions to your analogue playback system.

The TEA1 Series 2 triode equalization amplifier is a stand-alone vacuum-tube phono stage designed to satisfy the expectations of the most demanding music lovers.

The TEA1s2 features a zero loop feedback circuit with passive RIAA equalization. It offers two phono inputs, one with switch selectable resistive and capacitive loading allowing the user to fine-tune performance to the chosen phono cartridge. The other input is fitted with premium wide-bandwidth audio transformers installed on the PHONO 1 input to provide the higher gain and very low noise required by low output moving coil cartridges. Designed to precisely track the prescribed RIAA equalization curve, the TEA-1s2 assures absolute tonal accuracy. The low-gain audio circuit of the TEA-1s2 is comprised of two cascaded single-ended triode amplifiers. The circuit is a zero-feedback design, to eliminate the temporal inaccuracies that negative feedback introduces. RIAA equalization is established by a passive network between the two gain stages. Careful implementation of this fundamentally simple circuit results in extremely wide bandwidth and low distortion, without resorting to negative feedback.

The ideal dc power supply circuit is simply a zero impedance path to ground.

Any deviation from this ideal is fully reflected in the audio circuits. Thus the power supplies are as important to audio performance as the audio circuits and must be accorded equal attention in design. In the TEA-1s2, each stage has its own discrete regulated DC power supply. These power supplies have been carefully designed for minimum impedance, even at the highest audio frequencies, to prevent the power supplies from degrading music reproduction.

Specifications

Performance specifications measured at 1 kHz

Gain: TEA1s2

Low Gain Input – 54 dB

High Gain Input – 66 dB

Gain: TEA1s2b

Both Inputs – 54 dB

Overload TEA1s2

Low Gain – 50 mV

High Gain – 12 mV

Overload TEA1s2b

Both Inputs – 50 mV

Hum and Noise

Direct Inputs – 80 dB below 10 mV input

High Gain (TEA1s2 only) 72 dB below 1 mV input

Phase

Phase correct

Input Impedance TEA1s2

Low Gain Input variable, 130 Ohms – 47 kOhms

High Gain Input 420 Ohms Input Impedance

The TEA1s2 is being offered new in its factory sealed box with a full CJ warranty.

Snowdeal Sound is a specialty 2 channel audio dealer and authorized Conrad Johnson dealer. We represent a small, curated line of equipment so that you save time and get the best sound. Please call for the best price 203 767 9676 and to arrange for payment via PayPal (fee negotiable based on final price), Personal Check, or WireTransfer.

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