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Minimserver for dietpi4/17/2023 ![]() ![]() Wifi connection another streamer and server. Roon / LMS / UPnP server dedicated to DIY passive PC. SPDIF Coincident Speaker Statement ST-4 Cable with Black Cat AdaptersĬoincident Speaker ST-10 power cables on Tomanek power strip Source: Metrum Acoustics Amber with RoPiee distribution, Picoreplayer, dietpi.Įthernet cables Pachanko lan-i2s (50cm) and SOtM dCBL-CAT6 HG (20 cm) Sennheiser HD800S headphones with Siltech Duchesse Crown cable No jack 3.5 mm, which reflects the willingness of Metrum Acoustics to position this headphone / DAC amp on the hifi end of audio equipment. The last guest on the front is the 6.35mm jack that will welcome your headphones. The volume knob, meanwhile, by design only requires that we press on it to see it out and operate easily. Switching from one source to another is done by pressing the ON / OFF button so that if you want to switch from the USB input to the Coax1 input you will necessarily go through a "Standby" mode: not great when we have several sources. The front panel has 6 LEDs (Coax 1 & 2, Optical, USB and therefore i2S in my case) for the inputs, a "Standby" LED and an "Error" LED. The dimensions and the case are exactly the same as those of Amber, which makes it in aesthetic terms a homogeneous whole. This connectivity is provided by an ethernet cable with RJ45 connections.Īmethyst is available in black or silver facade. Note that in my case, the USB input has been replaced by an i2s input in order to benefit from this standard / connectivity between Ambre and Amethyst. ![]() Two SPDIF digital inputs on RCA connectorsĪ USB input on the HiFace Two module base In terms of inputs and outputs, the Amethyst has:Īn analog output on RCA connectors (2V RMS) If the module is implanted, only the MQA signals will be processed: all the other signals outside MQA will be directly redirected to the DAC without passing through the MQA module. The Amethyst, like the higher range dac such as Adagio or Pavane can benefit from a complementary module for the management of the MQA (only streaming on Tidal today). When using the DAC part, the headphone amplification section is not active and all the power is associated with the conversion part. This headphone / dac amp does not present an output stage like the TotalDac Twelve MK2 or TotalDac Direct. ![]() ![]() Background noise is given for 145db at 2V RMS. It relies on a 30VA power supply similar in design to that of Ambre. The headphone amplification section is there to be able to control headsets up to 16 Ohms. The DAC therefore accepts only PCM-only signals, up to 384kHz in 24bits on the USB, 24bits / 192kHz on the SPDIF RCA input and 24bits / 96kHz on the Toslink. This DAC is part of the lineage of NOS DAC (NonOver Sampling) (a small article that explains the difference between DAC NOS, Delta-Sigma and DSD). These modules are associated with an FPGA which allows to regularize the input signal. Note that these are the latest versions of these proprietary modules (Dac TWO). This headphone / dac amplifier is designed on the basis of 2 Transient R2R conversion modules (one per channel). Metrum Acoustics : Amber & Amethyst, a wonderful setįollowing the various tests of the Metrum Acoustics Ambre that I was able to obtain, and having the idea to put again a system around my Sennheiser HD800S headphones, I combined the Ambre with the small headphone amp / dac of Metrum Acoustics: the Amethyst. Ludovic Audoin AKA Le Son de chez Patatorz This article has been translated from french to english and the original text can be found at …/metrum-acoustics-ambre-amethyst-un-e…/ and was written by Mr. Just another client review on the AMBRE and AMETHYST by Metrum Acoustics. ![]()
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