Audio Research · D-series tube power amplifiers

D-110

A 42 kg valve power unit from 1979 - 100 W/ch and one of the first ARC units able to drive difficult loads.

Catalogue code: D-110
Years: 1979–1980
Type: power amplifier (tube)
Valves & speakers: 100 W + 100 W into 8 ohms, 360 W bridged
Lifecycle: retired
Confidence: High

Specifications

Watts: 100
Watts_basis: per channel, 8 ohm load unless noted in rated_load
Channels: 2
Technology: solid-state
Class_of_operation: not stated in the catalogue sheet
Weight: 42 kg
Original_list_usd: $1,995 (D-110B $2,750)

Safety

Valve equipment: 400-500 V is present on the plates and stored in the supply after switch-off. ARC units are valve-matched at the factory - replacement sets must be bought as matched quads/pairs.

01 / Witnesses

What applies here

Marks that can be entered for this maker: Model / catalogue number, Model / catalogue number, British capacitor code (Hunts, Mullard), Japanese capacitor code (Nichicon, Chemi-Con, ELNA), EIA component code.

02 / Bounds

The model year is a floor

Nothing predates 1979; components only push the date later.

03 / Value

What moves the price

Sold-price aggregates are not collected yet, so the archive gives no figure — condition, originality of the transformers and a documented recap move this model more than any list price.