SPL AD Converter 24/192

An official option to digitize the classic SPL studio range

Certain SPL devices have become studio references for their very musical approach to sound capture: solid preamplification, useful processing (depending on the model), and a sonic signature that is easy to place in a mix. This optional card follows that logic: it does not replace the analog character of your Frontliner, Channel One, Track One, Kultube, GainStation1, or GoldMike MK2; it extends it at the output by adding an analog-to-digital conversion stage directly inside the device. The result: you keep your settings, your gain staging, and your SPL color, while retrieving a digital signal ready to enter your interface, recorder, or workstation.

Who is this card for, and in which use cases does it make a difference?

This option is aimed at demanding home studios as well as professional studios that want to simplify the recording chain without sacrificing quality. It is ideal if you often record vocals, guitar, bass, or mono sources and your SPL device is at the heart of the capture: you avoid an extra path (cables, external converter, potential noise points) and gain level coherence.

It is also suitable for mobile setups or recording racks where every unit counts: by digitizing as close as possible to the source, you maintain a stable and reproducible capture. Finally, if your audio interface lacks high-end line inputs or if you prefer the sound of your SPL processing, this card is an efficient way to capitalize on your front-end and take it directly into the digital domain.

Conversion, synchronization, and performance: the option that ensures reliable capture

Clean conversion, with real headroom for gain staging

The card offers a dynamic range of 112 dB and extremely low THD+N (0.0007% at -1 dB FS / 1 kHz), resulting in a detailed, low-noise signal and faithful transient reproduction. The correspondence 0 dB FS = +15 dBu provides a clear reference for setting your levels: you can exploit the headroom of your SPL analog chain while keeping a safety margin in the digital domain.

Internal and external sampling frequencies

Internally, the card covers studio standards of 44.1, 48, 88.2, and 96 kHz. It also accepts external sampling frequencies of 32, 176.4, and 192 kHz, useful if your studio is locked to a clock or specific production environment. Add to this a jitter specified at 300 ps (average 700 Hz to 100 kHz): the goal is stable conversion, with a clean image and high-frequency response, especially when stacking takes.

Filtering and frequency response adapted for recording

The frequency response is specified as 10 Hz to 22 kHz (at 48 kHz) with a tolerance of +/-0.2 dB, ensuring linear capture over the essential useful spectrum. The stopband attenuation figures (-105 dB at 48 kHz, -102 dB at 96 kHz) confirm this: clean filtering designed to limit out-of-band artifacts and maintain a natural sound, especially on vocals and acoustic sources.

Technical specifications

Frequency response - start	10 Hz	Sampling frequency	192 kHz
Frequency response - end	22 kHz	Rack unit	1
Category	converter

Optional analog-to-digital conversion card for the following SPL devices	Frontliner, Channel One, Track One, Kultube, GainStation1, GoldMike MK2	Stopband attenuation	-105 dB at 48 kHz; -102 dB at 96 kHz
Internal sampling frequencies	44.1, 48, 88.2, 96 kHz	0 dB FS	+15 dBu
External sampling frequencies	32, 176.4, and 192 kHz	Power consumption at +15 V	max. 115 mA
Dynamic range	112 dB	Power consumption at -15 V	max. 17 mA
Total harmonic distortion + noise (at -1 dB FS / 1 kHz)	0.0007%	Dimensions (W x H x D)	100 x 27 x 76 mm
Frequency response (48 kHz)	10 Hz - 22 kHz, +/-0.2 dB	Weight	68 g
Jitter (average 700 Hz - 100 kHz)	300 ps