beyerdynamic A 20
Reference headphone amplifier
Headphone Amp / DistributionPrice not published
Specifications
- Type
- Headphone Amp / Distribution
- Description
- Reference headphone amplifier
- Topology
- discrete output stage
- Signal path
- Analog
- Channels
- 2
- Channel format
- stereo
- Form factor
- Desktop
- Connection
- RCA input; 2x 1/4in (6.35mm) headphone jacks
- Powered
- Yes (mains)
- Power (W)
- 0.17 (170mW @ 250ohm; 150mW @ 30ohm; 100mW @ 600ohm)
- Frequency response
- 10 - 100,000 Hz (-1dB)
- Impedance (Ω)
- 30-600 (supported headphone load range)
Details
Controls: Power switch, input selector, volume knob
I/O: Line-level input; 2x 1/4in headphone outputs
Notable use: Desktop reference headphone amp for driving high-impedance studio/audiophile headphones; two simultaneous outputs for shared listening
Notes: FLAG: product URL returns 404 on current NA site crawl (may be region-limited, sold-out, or delisted at time of research); specs sourced from retailer/review pages. FLAG PRICE: street prices found ranged widely ($299-$649) with no single confirmed current MSRP -- left blank rather than guess. THD spec (0.01% @ 170mW/250ohm) and SNR (>100dB unweighted) also reported but not independently verified on an official spec sheet. Circuit described as derived from the discontinued A2 reference amp.