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Description
GS-HA013 - Two Channel Headphone Amp with Input SwitchingBelt Pack Range The GS HA013 like other units in this range is small, robust and economical. It provides 1 off headphone amplifier in a compact format. It builds on the successful GS HA001 and adds switches to allow each input to be routed to the left ear, right ear, or both. A toggle switch turns the unit on off and a bright blue LED indicates that the unit is on and flashes when the battery is getting low. Audio input is on 2 XLRs normally feeding
Belt Pack RangeThe GS-HA013 like other units in this range is small, robust and economical. It provides 1 off headphone amplifier in a compact format.
It builds on the successful GS-HA001 and adds switches to allow each input to be routed to the left ear, right ear, or both.
A toggle switch turns the unit on/off and a bright blue LED indicates that the unit is on and flashes when the battery is getting low.
Audio input is on 2 XLRs normally feeding left & right channels of the headphone amp. A switch is provided to allow an unbalanced stereo signal input on just 1 off these XLRs to be feed to both channels of the headphone amp.
A phase reverse of the right ear facility is provided (operation by a small toggle switch).
2 off headphone jack connections are provided (in parallel) each connector is suitable for use with both A and B gauge jack plugs.
FEATURES:
• Powered from 1 x PP3 long life battery
• External DC power input
• On/off switch
• Blue power on LED Compact size with belt clip
• 2 balanced inputs on rear panel XLRs
• 1 input switchable to unbalanced stereo
• Input gain controls
• Seperate left/right headphone gain controls
• Phase reverse right ear switch
• 2 x Headphone jacks 6.35mm (A/B gauge)
• 1 x Headphone jack 3.5mm
• Headphone impedances of 100 - 2000 ohms
• Each input can be switched from left ear, right ear, or both
SPECIFICATIONS:
PROVISIONAL
BALANCED INPUT IMPEDANCE >50K Ohms
UNBALANCED STEREO INPUT IMPEDANCE >22K Ohms (On each side)
INPUT GAIN RANGE -20dBu to +8dBu
FREQUENCY RESPONSE -1dBu @ 20Hz & 20kHz
NOISE -54dBu (RMS 22-22kHz) @ Max Gain -85dBu (RMS 22-22kHz) @ Min Gain
HEADPHONE IMPEDANCE 200 Ohms to 2K Ohms
HEADPHONE LEVEL RANGE -20dBu to +10dBu
MAXIMUM HEADPHONE LEVELS
****WARNING HIGH SOUND LEVELS CAN BE HARMFUL TO YOUR HEARING****
+19dBu into 2K Ohms
+18dBu into 600 Ohms
+16dBu into 200 Ohms
2 x HEADPHONE CONNECTORS 6.35mm A & B gauge Wired in Parallel
POWER Internal: 1 x PP3 9 volt battery
External: 12 to 20V @ < 44Ma 2.5 mm Jack (inner positive)
BATTERY LIFE
BATTERY INDICATOR Steady blue LED indicates good battery Flashing blue LED indicates low battery
OVERALL SIZE 43 x 101 x 103 mm (H x W x D)
UNIT WEIGHT 380 Grams (including battery)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Fabulously bizarre and effective
These silicone socks have to be the strangest item I have ever ordered from Amazon. However strange they are, I was pleasantly surprised with them.
My order came with two pairs, and I took one pair out to wash before use. I laughed at handling them then because they were a cross between hospital socks and leftover mannequin skin…trippy.
The socks dried fast, so I put on foot lotion and put the socks on. The socks are beige skin tones that cover the entire foot up to the ankle, basically booties.
The silicone is very soft and makes putting on and taking off the socks easy. They are also surprisingly easy to walk around in because the bottoms have grips, again, like hospital socks. I walked on tile, hardwood, and carpet with no slipping. The booties also stayed in place with no issues.
I was concerned my feet would sweat, but that didn't happen. I was able to wear them for 3 hours without sweaty feet.
When I took them off, my feet were a lot more soft than before or if I had used regular socks. For reference, my feet are not terrible, but the skin around my toes is dry and peeling from my picking(gross, I know).
The socks I got are a size large, which worried me because they are big, but the site said for my shoe size (9) that's what I should order, and they were right. They are the perfect size and stretchy for room.
I can't believe how cool and well-thought-out these socks are, on top of working. Honestly, these are among the top 20 favorite items I've ordered from Amazon. They may look incredibly strange, and they are, but they work wonders.
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Reviewed in the United States on June 5, 2025
★★★★★ 3
Not well made
I have used these for 2 weeks now and one of them has a hole in the sole...
I won't ever buy them again
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Reviewed in the United States on July 15, 2025
★★★★★ 5
Works for foot psoraisis
Size: 2 pairs black L
Got these for work (service industry) to reduce issues with psoriasis and blisters while putting on 20k+ steps a day. Over time the wounds healed and I could work without so much pain. I now don't use them all the time like I used to, only when a new lesion or blister appears, too prevent a breakout. Tip: if you're not in full breakout, wear thick socks under these as a barrier to friction.
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Reviewed in the United States on April 28, 2026
★★★★★ 4
Work well but run small
Size: 1 pair black L
They do seem to run a bit small. I bought them for my bf but snagged them from him because I couldn’t resist! I’m about a W8/12 and they were just a little big but unlike others, I just put them on while sleeping and didn’t walk around with them. If you’re just planning on that, they did a great job at sloughing and moisturizing 😎
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Good socks they work.
Size: 2 pairs black L
I normally wear size 13&half to 14 men's, and these fit me ok. They sit just below the ankle. They can get a little tight for me so you should look out for that if you are on the thicker side. But they work as advertised and help moisturize your feet. I recommend wearing them if you're going to just be hanging around home for a bit in one spot as they can be a little slippery to walk in if you go fast. Would not recommend going up and down stairs.
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Reviewed in the United States on August 28, 2025