## Metrum Acoustics Amethyst - Entry Level NOS DAC with Headphone Amplifier
> Amethyst is not available for purchase anymore
**1 DACTWO Transient Module per Channel. Analog Volume Control with Amplification for Headphones!**
The Amethyst is our entry model NOS DAC using our praised forward correction technology. As a result, music will be more exciting as details on very low levels will be audible. The Amethyst can meet the best systems today in terms of sound quality as it inherited all the good properties from our top models.
### Integrated Headphone Amplifier
In addition to a solid DAC we have implemented a powerful headphone amplifier with volume control. The built-in headphone amplifier gets its power from the powerful 30VA toroidal power supply and is capable of driving impedances down to 16 Ohms. When the Amethyst is used as a DAC only, this power will be available for the DAC exclusively.
### R2R Technology
The Amethyst is using two Transient R2R ladder DACTWO modules. This results in an extremely fast and accurate impulse behavior and brings your listening experience to a much higher level. Despite the fact that both DACTWO modules are present on the same board, a high channel separation of 110 dB is realized. This contributes to flawless positioning of instruments.
### Intelligent Operation
The RCA outputs have a fixed level of 2.1V @ 0dBFS, so the Amethyst can be used as a stand-alone DAC. When headphones are connected, the RCA outputs are muted and volume control becomes active. When disconnected, the RCA outputs are activated again.
### Low Noise Floor
Even though the Amethyst is a 'mini' integrated design, incorporating both digital and analogue circuitry, the noise floor is extremely low (-145dB with respect to 2V RMS). These low noise figures indicate how the fine detail retrieval Metrum Amethyst is known for is made possible.