TRIODE Luminous1.0

Commentary

A 24bit/96kHz D/A converter for HDCD.

The D/A converter employs a one chip 8-times oversampling Δ ∑ D/A converter IC compatible with 24bit/96kHz and HDCD manufactured by Bar Brown, and is controlled by a microcomputer.

The buffer circuit is a double buffer circuit consisting of a MOS-FET and a vacuum tube, and is designed to be used according to user's preference.
The vacuum tube buffer is single-stage amplified by a small twin triode 12AU7A single-sided unit, and the cathode follower output by the remaining single-sided unit. In addition, a small line transformer with a permalloy core is used for the output stage to adjust the gain and improve sound quality.
The MOS-FET buffer circuit consists of three stages of amplification, two stages of source follower and one stage of amplifier and filter.

Both buffer circuits are compatible with HDCD.

The power supply section is equipped with two toroidal transformers to separate the digital and analog systems to obtain a sufficient power supply and eliminate interference between the and circuits.

A design is adopted in which the edge of the acrylic plate installed on the top plate is irradiated with the luminescent color.
The light emission color can be changed freely with each RGB button switch.

The vacuum tube socket does not use an ordinary socket, but uses a newly developed vacuum tube socket that plugs directly into the printed circuit board.

Model Rating

Type	D/A converter
Digital input	Optical (TOS) : 2 systems Coaxial (RCA) : 2 systems
Analog output	Unbalanced (RCA) : 2 lines FET buffer and vacuum tube buffer Permalloy core line output transformer installed in vacuum tube output stage
Bit rate	16/20/24bit
Sampling frequency	32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
High sound quality function	HDCD (PMI License)
Accessories	RGB Illumination (all side edges, can be dimmed or turned off with RGB button)
External dimensions	Width 200x Height 100x Depth 200 mm
Weight	Approximately 3 kg