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Phono Stage

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  • Parasound JC3+ Phono

    Parasound JC3+ Phono

    Parasound JC3+ Phono $3000 retail Designed by John Curl - creator of the legendary Vendetta Research phono preamp Inputs and outputs use Vampire brand 24k gold-plated RCA jacks Balanced outputs use Neutrik brand premium XLR jacks MM 47k ohm, MC 47k ohm or MC variable 50-550 Ohms RIAA accurate within 0.2 dB Exclusively Vishay-Dale resistors in the audio path Triple shielding; low-carbon mild steel partitions isolate the power supplies & AC wires Dual mono design; each audio channel is separately enclosed in its own extruded aluminum enclosure Separate high speed-soft recovery rectifiers, filter caps and voltage regulators for each channel Mono switch can improve sound of mono and older LPs Built-in AC line conditioner to prevent AC noise from polluting the circuits AC polarity reverse switch can reduce hum in many systems Non-magnetic aluminum rear panel for purest sound Turn On Options switch: manual or auto with 12v trigger input Premium detachable heavy gauge IEC AC cord 2u Chassis, rack mountable with HRA2 (sold separately) How the JC 3+ improves on the original JC 3: Variable MC load adjust independent for each channel from 50-550 ohms with dual gang potentiometers specially made for Parasound by Vishay. Curl-Thompson tweaked circuits to further reduce the JC 3 silent background noise. 24k gold plated copper traces on phono module boards for utmost conductivity and most transparency/detail in the music. 47% larger low ESD power supply filter caps greater reserve for head-snapping dynamics. Ability to turn off illumination of the front panel P logo. Learn More
    $1,800.00

  • Conrad Johnson ET6 with phono stage, vacuum-tube

    Conrad Johnson ET6 with phono stage, vacuum-tube

    For vinyl enthusiasts, the ET6 is optionally available with a vacuum-tube phono stage that borrows its zero-feedback audio circuit from our reference quality TEA1-S3 phono stage. Customers can choose between high gain (recommended for cartridges with a rated output of 1.0 mV or less) and low gain (recommended for cartridges with rated output greater than 1.0 mV) versions of the phono stage. Input resistive loading is switch selectable over a range from 47 kOhms down to 200 Ohms. The ET6 phono stage is built to the same high quality standard found in the ET6 line-stage. ET6 Optional Phono Stage•High Gain Version 54dB •Low Gain Version 40dB •RIAA Equalization: +/- .25 db 20Hz to 20kHz •Hum and Noise: -80dB relative to 10mV input •Phase: phase correct •Tube Compliment: High Gain Version 3x 12AX7 Low Gain Version 2x 12AX7, 1x 12AU7 Learn More
    $5,540.00

  • Conrad Johnson ET6SE with SE phono stage, vacuum-tube

    Conrad Johnson ET6SE with SE phono stage, vacuum-tube

    ET6/ET6SE Vacuum Tube Preamplifiers At conrad-johnson, development of our flagship products has traditionally led to important enhancements of our entry-level offerings. The ET6 preamplifier is a case in point. The ET6 line-stage is a “baby” version of our flagship line-stage preamplifier, the GAT. The family resemblance is much more than skin deep. With voltage gain provided by a triode vacuum-tube, the zero-feedback line-stage circuit of the ET6, along with its DC voltage regulators, closely replicates the circuit of the GAT. Finally, and especially noteworthy, the ET6 features a relay operated discrete stepped attenuator level-control circuit of the type found in the GAT and ET7, absent only the balance control function found in those more costly models. Functionally, the ET6 provides highly flexible I/O facilities with six separate line-level inputs (including one “tape” loop), plus a theater loop that facilitates use in a home theater system. In addition, the ET6 offers the convenience of infrared remote control of all functions. For vinyl enthusiasts, the ET6 is optionally available with a vacuum-tube phono stage that borrows its zero-feedback audio circuit from our reference quality TEA1-S3 phono stage. Customers can choose between high gain (recommended for cartridges with a rated output of 1.0 mV or less) and low gain (recommended for cartridges with rated output greater than 1.0 mV) versions of the phono stage. Input resistive loading is switch selectable over a range from 47 kOhms down to 200 Ohms. The ET6 phono stage is built to the same high quality standard found in the ET6 line-stage. Premium quality component parts are specified to optimize performance and to sustain that performance for years to come. Precision, metal-film resistors yield low noise performance for greatest clarity. Polypropylene capacitors, used exclusively in the audio circuits and the regulated plate voltage supplies, offer extraordinary temporal accuracy. In fact, the ET6 is built to standards that meet or exceed those of many companies’ “flagship” offerings. Those who wish to take the performance to yet a higher level will be thrilled by the availability of an upgraded “SE” version. The ET6SE boasts CJD Teflon capacitors and metal foil resistors in critical circuit applications. It would be fair to say that the only thing “entry-level” about the ET6 is its price. Arrange to audition one at a conrad-johnson dealer to find out for yourself – you’ll be surprised at just how affordable true high-end performance can be. Learn More
    $7,500.00

  • Conrad Johnson ET6PH phono card for PV15/ET2/ET3, vacuum-tube

    Conrad Johnson ET6PH phono card for PV15/ET2/ET3, vacuum-tube

    Price is for phono card when ordered with the ET3. When purchased for installation in an existing unit, there is a 2 hour labor charge for installation. Learn More
    $1,200.00

  • Conrad Johnson ET6PHSE phono card

    Conrad Johnson ET6PHSE phono card

    Price is for phono card when ordered with the ET3. When purchased for installation in an existing unit, there is a 2 hour labor charge for installation. Learn More
    $1,750.00

  • Conrad Johnson TEA1S3b phono-stage, tube

    Conrad Johnson TEA1S3b phono-stage, tube

    TEA1 Series 3 Phono Preamplifier The TEA1 Series 3 triode equalization amplifier is a stand-alone vacuum-tube phono stage designed to satisfy the expectations of the most demanding music lovers. The TEA1s3 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-1s3 assures absolute tonal accuracy. The low-gain audio circuit of the TEA-1s3 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. Like the GATs2, the upgraded TEA1s3 benefits from improvements to the main audio power supply and increased capacitance. The TEA1s3 is equipped with two phono inputs, one a direct input with 54 dB of gain and variable resistive and capacitive loading, the other fitted with premium step-up transformers for low output cartridges, to provide an overall gain of 66 dB. The TEA1s3 is optionally available as the TEA1s3b without the step-up transformers, having instead two direct inputs, one with variable loading and one with fixed loading. Learn More
    $15,000.00

  • Conrad Johnson TEA1S3 phono-stage, tube with step-up transformers

    Conrad Johnson TEA1S3 phono-stage, tube with step-up transformers

    TEA1 Series 3 Phono Preamplifier The TEA1 Series 3 triode equalization amplifier is a stand-alone vacuum-tube phono stage designed to satisfy the expectations of the most demanding music lovers. The TEA1s3 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-1s3 assures absolute tonal accuracy. The low-gain audio circuit of the TEA-1s3 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-1s3, 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. The TEA1s3 is optionally available as the TEA1s3b with the step-up transformers deleted. This version of the TEA1s3 has two direct inputs, one with variable loading and one with fixed loading. The full potential of any circuit design can only be realized if executed with the highest quality parts. The audio circuits of the TEA-1s3 use only conrad-johnson’s proprietary Teflon capacitors. In the power supplies, all capacitors are polypropylene or Teflon – there are no electrolytic capacitors anywhere in the audio circuits or their dc power supplies. The audio circuits and related power supplies both use high-precision laser trimmed metal-foil resistors, designed for ultra-low inductance. All parts in the RIAA compensation network are 1% tolerance, to assure precise tracking of the RIAA curve. Input and output connectors are gold-plated, machined oxygen free copper. Even the hookup wiring has been carefully selected for optimal audio performance. The casework features black anodized aluminum, brushed-polished, sides and ventilated top cover. Thoughtful engineering, specification of the finest available component parts, and painstaking care taken in production make the TEA-1s3 a phono equalization preamplifier without peer in music reproduction. We invite you to arrange an audition with your conrad-johnson dealer to confirm for yourself the extraordinary musical performance of these products. Learn More
    $18,000.00

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