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818V3 Reference Audio Core

Here you will find all of the information that you require to get the most out of your 818V3 Reference Audio Core.

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No. All analogue signals are converted to the digital domain on the input card. This is done using  high-quality A/D conversion running at 96kHz sampling rate and 24 bit precision.

The 818V3 can perform the role of a pre-amplifier superbly. It can provide source selection and volume control when used between sources and power amplification. Its incredible sound quality means that it is suitable for use with products of even the highest performance.

The 818V3 can act as a very high performance DAC, accepting digital signals on its inputs, converting them to the analogue domain and passing the audio on to the next component in the audio chain. However, as the 818V3 can perform the duties of source selection and volume control, if the next component is a pre-amplifier product, such a set-up would add unnecessary duplication with associated and unavoidable sonic degradation. A purer path would be provided by connecting the 818V3 directly to the amplification and allowing it to perform the role of control unit as well as DAC.

The 818V3 is a fully-fledged control unit with a range of input and output connections for both digital and analogue forms of audio. This allows it to be used as the “hub” in many system types. The Ultra DAC has no analogue inputs and no digital outputs and it is designed to fully exploit this limited functionality to exceed in the roles it can play. As a result, it can provide superior performance to the 818V3 in applicable situations. However, the additional functionality of the 818V3 makes it the only choice in other situations where such functionality is essential.

This socket allows the 808V6 to be connected to an Ethernet network so it can be used as an audio end-point in a Meridian Sooloos or Roon streaming system.

The 818V3 is fitted with the ID41 Sooloos card. This has the capability of providing exceptional sound quality from Sooloos or Roon. It can out-perform any stand-alone Sooloos source product in this regard.

Yes. The 818V3 can be configured specifically for this application. Details on this can be found on page 31 of the 818V3 user-guide.

Not necessarily. All the key features of the 818V3 are available through the front-panel set-up. The Meridian set-up program, MConfig, allows the settings of the 818V3 to be further personalised and for a back-up of the settings to be created.

Yes, but this requires the use of the Meridian set-up program, MConfig. The legends are limited to a maximum of five characters.

The 818V3 includes the ID41 audio end-point for a Sooloos system. However, another device is required on the network to host the Sooloos software. Within Sooloos terminology, the host is known as the “Core” of the system. The 818V3 is not designed to perform this task as it involves the use of additional computer circuitry which, if included inside the product itself, would be detrimental to audio performance. A selection of Meridian products can act as Core as can certain models of QNAP NAS when loaded with the appropriate Sooloos software “plug-in”.

Most QNAP devices which are based on Intel processors can run the Sooloos software plug-in. If a two-bay unit is required, we recommend the TS251 models. If a four-way device is required, we recommend the TS451 models. If a rack-mountable solution is required, the TS453U can be used.

Yes. The full command set is available on Meridian TechNote TN49.

The Meridian program Control Window can be used to check whether the 818V3 is receiving and transmitting data over RS232. This program runs on a PC and acts as a pre-configured terminal to check communications to and from the 818V3.

Emphasis is a feature of SPDIF rather than file formats such as FLAC. The presence or otherwise of Emphasis is not actually flagged in a ripped file so there is no mechanism for the product to detect it. In order to guarantee correct playback quality of Emphasized discs the De-Emphasis process should be carried out before or during the process of importing the file into Sooloos or Roon. The indicator for Emphasis on the 818 relates to the playback of digital audio from a SPDIF source.

The 818V3 supports “MHR” (Meridian High Resolution) on its digital outputs. This provides improved performance compared to standard SPDIF digital audio. However, MHR is a proprietary interface available only on Meridian products. When MHR is decoded by a non-Meridian product, it results in the noise described in the question. MHR can be toggled on and off by holding down the fast-forward (►►) key under the front flap of the product for a few seconds while the unit is in Standby. With MHR deactivated, standard audio will be produced from the digital outputs.

Yes. MHR can be toggled on and off by holding down the fast-forward ( ►►) key under the front flap of the product for a few seconds while the unit is in Standby. With MHR deactivated, standard audio will be produced from the digital outputs.

The trigger outputs accept plugs of the “DC Power Connector” type, with 2.1mm diameter and a barrel length of 9.5mm. Plugs are supplied in the accessory pack with the product and can be sourced on the open market from various mainstream suppliers.

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