The beyerdynamic A 20 is a Headphone amplifier with a 2x Stereo jack outputs 6.35 mm, in parallel mode.
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| Name | Sonifex Redbox RB-DHD6 | Sonifex Redbox RB-HD6 | Violectric HPA V220 black | SPL Pro-Fi Phonitor e black | Rolls PS 16 | SPL Phonitor 2 Black + Exp. Rack | SPL Pro-Fi Phonitor e & 1670 | SPL Phonitor x + DAC768xs | Apogee Groove 30th Anniversary Gold | Lake People G111 Silver |
| Brand |  | |  |  |  | | | |  |  |
| Description | Headphone Distribution Amplifier | Headphone Amplifier | Headphone amplifier | 120 volt headphone amplifier | Personal Monitor Power Center | Headphone Amplifier | Headphone amplifier and DA converter | Preamp / Monitor Controller | USB 2.0 DAC and headphone amplifier | |
| Format | 19", 1U | - | - | - | - | 19" / 2 U | - | - | - | - |
| Number of stereo channels | 6 | 6 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Level Adjustment Per Channel | ||||||||||
| Amount Of Inputs | 1 | 6 | 3 | 3 | 4 | 3 | 3 | 3 | 1 | 2 |
| Rack format | ||||||||||
| RCA input | - | - | - | Unbalanced | - | - | Unbalanced | - | - | - |
| Mains voltage (switchable) | - | - | - | 230 V AC / 50 Hz or 115 V AC / 60 Hz | - | - | 230 V AC / 50 Hz or 115 V AC / 60 Hz | - | - | - |
| Power consumption | - | - | - | Max 30 VA | - | - | Max. 30 VA | Max 40 VA | - | - |
| Dimensions (W x H x D) | - | - | - | 278 x 57 x 335 mm (with foot and volume control) | - | - | 278 x 57 x 335 mm (incl. feet and volume) | - | - | - |
| Weight | - | - | - | 3.3 kg | - | 7.3 kg | 3.3 kg | 4.3 kg | - | - |
| Colour | - | - | - | Black | - | Black | Black | Black | - | - |
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The beyerdynamic A 20 is a Headphone amplifier with a 2x Stereo jack outputs 6.35 mm, in parallel mode. The retail price is 295.19 £. Buy beyerdynamic A 20 at Thomann UK.
| Frequency range | 10 - 100,000 Hz (-1dB) |
|---|---|
| Total harmonic distortion (THD) | 0.01 % at 170 mW / 250 Ohm |
| Maximum output power | 170 mW / 250 Ohm |
| Signal-to-noise ratio | > 100 dB (unweighted) |
| Channel separation | > 80 dB at 1 kHz / 250 Ohm |
| Analog inputs | 1 Pair RCA |
| Analog outputs | 1 Pair RCA |
| Dimensions | 164 x 212 x 55 mm |
| Weight | 1640 g |
| Number of stereo channels | 1 |
| Output Level Adjustment Per Channel | No |
| Amount Of Inputs | 1 |
| Rack format | No |
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