PJ.MIAOLAI A9 6K4 Vacuum Bile Tube Preamplifier NE5532 OP AMP AUX Bluetooth 5.0 USB RCA HIFI stereo Mini headphone Preamp

PJ.MIAOLAI A9 6K4 Vacuum Bile Tube Preamplifier NE5532 OP AMP AUX Bluetooth 5.0 USB RCA HIFI stereo Mini headphone Preamp

Marsoni

M251S

$59.00

Get it in 3 business days with 1 day shipping. Friday, May 29

PJ.MIAOLAI A9 6K4 Vacuum Bile Tube Preamplifier NE5532 OP AMP AUX Bluetooth 5.0 USB RCA HIFI stereo Mini headphone PreampParameters: Product number: A9 Color: Blac Working power: DC 12V 1. 5A Frequency Range: 20Hz 20KHz(3dB) Audio input: Bluetooth 5. 0 RCA U Disk Audio output: RCA 3. 5mm headphone port Signal to noise ratio:110dB (when RCA input) Distortion: 0. 05% U Disk Memory:32GB U Disk: MP3 WMA APE FLAC WAV etc Headphone impedance: 6 300 ohm Maximum output power of headphones: 100mW (32 ohm) Input sensitivity: 0. 775V RCA output level: 1,4Vrms High school bass

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These socks definitely keep most of the moisture away from my feet, even in wet conditions, which is why I bought them. I am diabetic, though, and the recommendation is to wear socks that don't constrict at any point. These have a tight band around the opening that while it is not uncomfortable on, leaves a mark when I take them off. So far it's been ok, but if you have any kind of swelling in your feet or ankles these would probably not be the best. My foot measures size 8 and I wear size 9 Brooks running shoes. The socks fit me just right but based on the size of the opening and the overall length, I wouldn't think they would fit anyone more than a size larger. Overall well made and perform well as you would expect from this brand.

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Reviewed in the United States on July 20, 2018

Verified Purchase

Halle

Pawtucket, US

★★★★★ 5

long lasting!

Size: Medium, Color: Black/Assorted

literally my favorite sock i will buy forever. they just started busting through after 6 years and i wear them a lot

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Reviewed in the United States on November 13, 2025

Verified Purchase

David

Boise, US

★★★★★ 5

Good quality

Size: Medium, Color: Black/Assorted

Comfy and sturdy

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Reviewed in the United States on January 27, 2025

Verified Purchase

Brooke

Battle Creek, US

★★★★★ 5

Favorite socks

Size: Medium, Color: Black/Assorted

These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!

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Reviewed in the United States on April 9, 2024