MOON 310LP Phono Preamplifier

Internal Settings (cont’d)

Gain Setting:

There are four (4) gain settings available on the MOON 310LP. They are 40dB for MM cartridges and 54dB, 60dB and 66dB for MC cartridges. However, keep in mind that when using the balanced XLR outputs, each of these gain levels increase by a factor of 6dB to 46dB, 60dB, 66dB and 72dB respectively (note: to keep the circuit board labelling simple, only the single- ended RCA gain levels are indicated).

There are three (3) jumpers sockets for each channel that are used to adjust the gain level setting; J16, J17 and J18 for the left channel; J32, J33 and J34 for the right channel. Each of these jumpers sockets have three pins allowing for 2 different possible positions. As well, there is a detailed diagram printed on the circuit board, located just below and to the right of each of these jumper banks, that shows the jumper positioning for the four available gain settings (see figure 8 below).

Figure 8: Left and right channel jumper banks for gain level settings

The factory default gain setting is 40dB, whereby all three jumpers in each bank are mounted to the left. In the event that you are using a MC cartridge, you will need to change the gain setting to either 54dB, 60dB or 66dB. The basic rule to determine gain for a MC cartridge is as follows: For a low output MC cartridge (0.7mV and lower), set the gain level to 66dB; for a medium output MC (0.7mV to 1.5mV) set the gain level to 60dB; for a high output MC (> 1.5mV) set the gain level to 54dB. However, as is the case with the other internal settings, let your ears be best judge as to what the best sounding gain setting should be. When using a MM cartridge, never set the gain above 40dB, otherwise you will overload the 310LP’s circuit, resulting in a very distorted output signal.

To select a gain level of 60dB, you would mount the jumpers for sockets J16, J17, J32 and J33 to the right, and the jumpers for sockets J18 and J34 to the left as shown in figure 9 below.

Figure 9: Left and right channels set to a gain level of 60dB

Once you’ve completed all necessary adjustments, carefully place the chassis cover back into place, making sure that the eight screw holes line up with their respective sockets on the main chassis, and replace the screws using the included allen-key.

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Internal Settings

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Simaudio 310 LP owner manual Gain Setting, Left and right channel jumper banks for gain level settings
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310 LP specifications

The Simaudio 310 LP is a high-performance phono stage designed to cater to discerning audiophiles seeking exceptional sound quality and versatility. This state-of-the-art device offers a range of features and technologies that elevate the listening experience, making it a standout component in any vinyl setup.

One of the main characteristics of the 310 LP is its ability to support both moving magnet (MM) and moving coil (MC) cartridges. This dual compatibility allows users to enjoy the fine nuances of their vinyl collection, regardless of the cartridge type. It features customizable loading options for MC cartridges, with adjustable resistive loading settings to fine-tune the performance according to the specific characteristics of the cartridge.

The device boasts an impressive signal-to-noise ratio, ensuring that even the quietest passages are rendered with stunning clarity. The use of high-quality components includes precision resistors and capacitors that are meticulously selected for their audio fidelity, allowing the 310 LP to deliver a rich, detailed soundstage. The phono preamp also features a low-distortion circuit design that minimizes signal degradation, preserving the original quality of the vinyl playback.

Another notable aspect of the Simaudio 310 LP is its innovative power supply design. It employs a high-performance linear power supply to further reduce noise and improve dynamic range. This thoughtful engineering enhances the overall stability and performance of the device, contributing to a lifelike and immersive listening experience.

The 310 LP is user-friendly, featuring an intuitive front-panel design that allows for easy operation. It includes LED indicators for power and input selection, which provide convenience without compromising the aesthetic appeal of the unit. Additionally, the phono stage incorporates both balanced and unbalanced outputs, ensuring compatibility with a wide range of audio systems.

In summary, the Simaudio 310 LP stands out as a premium phono stage that combines flexibility, outstanding sound quality, and cutting-edge technology. Its versatile features make it an ideal choice for audiophiles who demand the best from their vinyl playback systems, solidifying its place in the high-end audio market. Whether you are a vinyl enthusiast or a seasoned collector, the 310 LP promises to enhance your listening experience and bring your favorite records to life with unparalleled fidelity.
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