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Beyerdynamic A1 Headphone Amplifier

Beyerdynamic A1 Headphone Amplifier

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Product Description
Supplied accessories: Maximum Amplification: 18 dB Frequency Response: 1 Hz - 100 Khz (-1 dB) T.H.D.: 0.001% At 170 mW / 250 Ohms Channel Separation: > 89 dB Output Power: 100 mW / 600 Ohms; 170 mW / 250 Ohms; 150 mW / 30 Ohms Unweighted Signal-To-Noise Ratio: > 100 dB Output Impedances: Line Out, 100 Ohms headphone output Power Consumption: < 15 W via internal, controlled power pack Supply Voltage: 110 - 120 V AC Audio Connections: Headphone socket 1 Line Output 2 Audio Inputs (gold-plated RCA sockets) Sizing Dimensions: 250 X 225 X 50 mm Weight: 2.3 kg Read More

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dorkvader
199
Dec 4, 2013
Why does the IEC inlet only have two pins? I mean, it might cheaply and easily solve ground loop issues, but a metal chassis that is not grounded might not be safe. I would expect this to zap you with accumulated charge every time you touch it. Of course YMMV with the grounding scheme of your house.
headphonedude
94
Dec 7, 2013
dorkvaderIf you find an image of the rear panel, there is a symbol that looks like a square within a square. This means that it is double insulated and has passed testing to ensure electrical isolation of the chassis. Any faults or shorts are contained within the electronics themselves and have no path to ground. This is a legitimate scheme and is used on many household electronics from hair dryers to corded drills.
If this were a Chinese product I would be concerned as markings (such as double insulation and CE) are often applied illegally without the required testing to known standards. I trust Beyerdynamic as a company (and the hammer of German regulation) so that there is little doubt this product is safe.
That being said, I'm not very impressed with this amp at this price point. Think I'll sit this one out.
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