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PHONO LOCO Phono Stage

by Sutherland Engineering

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Starting from :

$8,200.00
$8,200.00

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Price with selection:

$8,200.00

Unlike the other designs, the Phono Loco is totally focused as a specialized transimpedance unit.  I started out real stubborn on using an XLR connector for the input on the PHONO LOCO.  Yes, the input circuit requires a floating connection of both terminals of the coil. So naturally, that would be a balanced cable with an XLR plug.

But... an RCA plug/socket can also convey those two connections with the center pin and the shell.   That is just fine ----- just no ground connections can go to the shell.

Therefore the PHONO LOCO can be ordered with WBT Nextgen silver RCA jacks or with XLR sockets depending on what tonearm cable you will be using.

Loco FAQs

What Does Transimpedance Mean?

A transimpedance amplifier input looks like a virtual short to the input signal. The input voltage is therefore zero. The input signal is the current going in/out of that virtual short. The input current is multiplied by the gain (in Ohms) to give an output voltage corresponding to the input current.

What Are The Loading Options?

There are no loading options or concerns. A current input stage (transimpedance) input is a virtual short. That topology obviates load resistor selection. The current going into that short is then amplified.

Can I Use a MM Cartridge?

You are welcome to try. It is unlikely to work very well.

Will It Work With […] Cartridge?

We expect the Phono Loco to work very well with most MC cartridges. But there is not yet a body of info available. We will keep a user forum page updated so experiences can be shared.

What is the Gain?

Conventional voltage amplifiers express gain in dB (as the ratio between the input voltage and the output voltage). With a transimpedance amplifier, input is current and the output is voltage. For that topology, gain is expressed in Ohms. Gain is approximately 10k Ohms at 1 kHz.

Most MC cartridges will work well at the medium gain setting. There is also a low (voltage down 6dB) setting and a high (voltage up 6dB) setting.

The above information is from the manufacturer.
Have a question? Connect with our Audio Gurus at 800-328-9973 or 215-862-4870 or Send email or use Contact form. You can also take advantage of our system matching expertise with a Free System Consultation.

Sutherland Engineering PHONO LOCO Phono Stage

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