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LITTLE LOCO Phono Stage

by Sutherland Engineering

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Starting from :

$3,800.00
$3,800.00

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$3,800.00

Sutherland has been making definitive phono preamps for a good long time. By focusing almost exclusively on phono preamps, design and circuitry has enjoyed continues refinement and improvement over the years. All previous designs were based upon voltage amplification.

The cartridge delivers a small voltage to the phono preamp input. That voltage is multiplied to a larger voltage (along with RIAA EQ) and the preamp delivers an output voltage. A voltage multiplier of 1,000 (for example) can be expressed as 60dB. One millivolt in = one volt out.

You may have also noticed a new kind of phono preamp design on the market. Usually referred to as ‘current input’. Until recently, this approach has been very much the talk of “those in the know”. But now, the broader listeners and reviewers are giving it some serious consideration. And many love what they hear. Simply speaking, the input signal comes from current flowing thru the cartridge, NOT the voltage from the cartridge. This current becomes the input for a transimpedance gain stage. In other words, the input signal is current, while the output signal is voltage.

— LINKING INTO YOUR SYSTEM —

Connections on the back panel of the LITTLE LOCO appear fully conventional. There is the usual IEC input for the power cord, a ground screw for grounding the turntable, two RCA jacks for the input signal from the turntable, and, finally, two RCA jacks delivering an output signal to your line-level preamp. There is, however, a requirement that both coil connections float with respect to ground. Turntable grounds and cable shields need to go to a separate ground wire. There must have no direct connection to the signal from either coil side. A conventional hookup procedure works 99% of the time. If you should be in the 1%, your dealer will get you taken care of. And, as always, you are always welcome to send an email to [email protected]

For more information and a deeper explanation, please review Appendix A.

Load Settings

There are no loading adjustments in the LITTLE LOCO. Your cartridge will see a load of zero Ohms. The input signal will be the current your cartridge produces into that virtual short. No need to worry about or fuss around with loading.

Gain Settings

Your LITTLE LOCO is factory-set to medium gain. That should work very well in most situations. The usual concerns about cartridge output voltage do not apply. Cartridges of varied output voltage specs tend to supply about the same level of drive current to a short. In other words, higher output voltages usually have higher resistance while lower output voltages usually have lower resistance. Into a virtual short, most deliver about the same signal. If your particular situation would benefit from a gain adjustment, you are welcome to make a modification. Inside, on the red circuit boards, you will find a place for gain setting resistors.

The LITTLE LOCO ships with 3k resistors for medium gain. You can boost the output voltage 6dB by removing those resistors. Or, you can reduce the output voltage 6dB by replacing the 3k resistors with 1k counterparts. No matter which gain you select, all four installed resistors must be the same value.

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 LITTLE LOCO Phono Stage

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