Audiolab 8000DAC (1991–1993)

A 6.0 kg slab of early 90s digital gear, built to anchor a serious 8000 Series stack, with seven digital inputs and a sleep mode.

Overview

The Audiolab 8000DAC is a digital-to-analog converter made by Cambridge Systems Technology under the Audiolab brand. It came out in 1991 as the company's first standalone DAC. It is 445 mm wide and weighs 6.0 kg. It was part of the 8000 Series, which also included the 8000A integrated amplifier, 8000CD player, 8000P power amp, 8000C preamp, 8000M monoblocks, and 8000T tuner, so an owner could build a fully matched system. Reviewers called the 8000DAC cleverly designed, excellently made and well-equipped, with superb measurements and broad listener appeal. HiFi Review labeled it "one of our favourite pieces of affordable hi-fi."

A significant update arrived in 1993, with changes described as going "more than skin deep." The revised version was noted as tonally neutral, musically engaging, cleaner and better-resolved than its predecessor, with tighter bass control. It didn't match the costly Pink Triangle DaCapo on difficult material, but it clearly beat the earlier model in resolution and control. The original, however, was said to offer greater presence and dynamics - a trade-off some listeners still prefer. The update cost £50 more than the original, though the base price is undocumented.

Seven Digital Inputs with BNC Connectivity

The 8000DAC had seven digital inputs, including BNC connectors for unbalanced coaxial signals. That was unusually generous for a mid-range DAC in the early 1990s. Owners could connect several sources, like CD transports, DAT machines and early digital tuners, without swapping cables. BNC was less common than RCA in consumer gear and hints at a semi-professional design approach, favoring stable, impedance-matched connections. The unit reportedly came with a carefully selected 75-ohm coaxial cable.

Sleep Mode That Kills Clock Noise

The 8000DAC had a 'sleep' mode that suppresses all internal clock activity when the unit is not in use. It was lauded at the time as simple, effective, and worthy of adoption by other manufacturers. Halting clock oscillation reduces potential noise coupling into connected components. That matters if the DAC is stacked with sensitive preamps or phono stages.

Philips TDA1547-Based Conversion Architecture

The conversion stage used the Philips TDA1547, a dual 16-bit DAC chip known for its smooth, low-glare output. Sources disagree on the supporting chips. DutchAudioClassics lists TDA1547 - SAA7350 - SM5843AP. VasilTech documents two variants: Type 216 using TDA1547 - SM5813APT - YM3623B, and Type 216.2 using TDA1547 - SM5843AP - YM3623B. That suggests production revisions or regional variants, but the TDA1547 is the constant. Sample rate support and bit-depth processing aren't documented in available sources. The SAA7350 is a digital filter chip, and its use in one configuration implies a standard 44.1 kHz upsampling or filtering stage typical of the era.

Historical Context

The 8000DAC debuted in 1991 as part of Audiolab's plan to offer a complete, cohesively engineered system. The original version received one of only three Audiophile Awards the year before the 1993 revision. By 1994, Gramophone noted the unit had undergone a "significant update," matching the 1993 revision. In May 1995, Hi-Fi World named it "Best Digital product." It was positioned as one of the decent mid-range DACs of the 1990s, arriving as digital audio was shedding its early sterility and beginning to earn audiophile respect. It didn't chase exotic specs.

Collectibility & Value

The 8000DAC remains sought after among collectors of 1990s British hi-fi, particularly those building full 8000 Series systems. A used listing from an undated device.report PDF noted an "Audiolab 8000DAC boxed £450," suggesting strong residual value for well-preserved units. In recent eBay listings, one example sold for $340. No common failure modes are documented, though owners are advised to check capacitor health given the unit's age. Spare parts availability is limited, but standard semiconductor types like the TDA1547 help long-term serviceability.