SKU: 83012454335

Henry Engineering THE MATCHBOX HD - Stereo Level Matching Interface/Amplifier

Sale price$29799.00 Regular price$33110.00
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Description

Henry Engineering THE MATCHBOX HD - Stereo Level Matching Interface/AmplifierThe Henry Engineering Matchbox HD is a professional grade analog level and impedance converter, serving as an interface between consumer and professional audio equipment. The Matchbox HD is a bi directional unit, employing four independent amplifiers to convert stereo inputs and outputs from unbalanced 10 dBv levels to +4 dBm balanced 600 ohm lines. All four outputs are adjustable, accomodating a wide variety of operating levels. The Matchbox HD also

The Henry Engineering Matchbox HD is a professional grade analog level and impedance converter, serving as an interface between consumer and professional audio equipment.

The Matchbox HD is a bi-directional unit, employing four independent amplifiers to convert stereo inputs and outputs from unbalanced -10 dBv levels to +4 dBm balanced 600 ohm lines. All four outputs are adjustable, accomodating a wide variety of operating levels.

The Matchbox HD also features a HI GAIN mode to properly match the low-level unbalanced outputs of computer sound cards. The unit's direct-coupled circuitry, and wide dynamic range, provides the sonic transparency, fidelity and level required by the digital editors, DAT's, Hard Disk, Flash Card recorders, and other digital audio sources with which it is meant to interface. The unit has an internal power supply, and 3 units may be rackmounted in a single rack tray, or individually wall and cabinet mounted.

Bi-directional, professional stereo level and impedance matching interface for consumer and professional audio gear
Eliminates hum, buzz, and distortion associated with mismatched levels and impedances
4 independent amplifiers with individual output level trims
Unique HI GAIN mode designed specifically to match low-level, unbalanced outputs from computer sound cards
Extended dynamic range, high operating headroom
Solid, all-metal housing with internal AC power supply
1/3 RU rackmount, wall and cabinet mounting options available
UPC: 837654309070
Dynamic Range 122 dB(Balanced)
125 dB(Unbalanced)
Signal-to-Noise Ratio 100 dB
Balanced: -100 dB ref. +4 dBu
Unbalanced: -95 dB ref. -10 dBv
Maximum Input Level Not Specified by Manufacturer
Maximum Output Level Balanced In to Unbalanced Out: +20 dBv
Unbalanced In to Balanced Out: +26 dBu
Input Connectors 2 x 3-pin XLR Female, L, R
2 x RCA Phono, L, R
Output Connectors 2 x 3-pin XLR Male, L, R
2 x RCA Phono, L, R
Input Impedance IHF: 10 kOhms, HI GAIN 5 kOhms
PRO: 20 kOhms
Output Impedance IHF: 2 kOhms, Unbalanced
PRO: 600 Ohms, Balanced
Dimensions 5.7 x 1.65 x 5.6" (144.8 x 41.9 x 142.2mm)
Weight 2.5 lb. (1.13 kg)
Packaging Info
Package Weight 2.2 lb
Box Dimensions (LxWxH) 8.661 x 6.221 x 2.126"
In the Box
Henry Engineering THE MATCHBOX HD - Stereo Level Matching Interface/Amplifier
  • 1 Year Warranty
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 83012454335

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4.1 ★★★★★
Based on 10 reviews
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Verified Purchase
Jonathan
Grantham, US
★★★★★ 5
Believe the Reviews
Color: Cooling Blue Cover, Size: King (Pack of 2)
I purchased these pillows because we were in need of new pillows, I previously had allswell pillows which were from walmart and they were good to start but now they tragically became very sparse and it started to effect my sleep so I saw these after careful review on other pillows and reviews I came across these and I saw some reviews and videos and I ordered them.. first they are king size we ordered they are perfect for the bed, they are plump and soft, they are memory foam which has always worked out for me for support and kept it’s shape these are great it did have a little smell I guess from packaging but other than that they are a huge upgrade from what we had before! I’m excited because they are cooling too! for the price point can’t beat it and this is coming from someone who was about to spend money on a purple pillow this will be good for now definitely buy it.
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Reviewed in the United States on March 28, 2026
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Verified Purchase
PilarC
Omaha, US
★★★★★ 3
Inconsistent
Color: Cooling Blue Cover, Size: Queen (Pack of 2)
Ive ordered two different batches of these pillows, the first was a 2 pack, the second batch was a 4 pack. The pillows that came in the 2 pack have a different quality to them. The memory foam feels thicker, takes long to depress and to spring back to form. It offers more resistance, a heavier odor (at the start), and was the pillow that I fell in love with. Things changed when I ordered the 4 pack a couple months later. There was an inconsistency between the foam in these two different batches. both sets of pillows are comfortable. The first batch being firmer means I had to remove more foam before it became comfortable but the 2nd batch being more springy, I was able to keep all the foam inside. I docked a couple stars because I’m not able to provide a consistent experience with these pillows across all three beds in my home. If you need a pillow, order a set and be happy. If you want a bunch of memory foam pillows throughout your house, maybe look elsewhere as these may not all be identical.
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Reviewed in the United States on January 17, 2026
M
Verified Purchase
Mari
Dallas, US
★★★★★ 5
Very cool and comfortable pillows. Great value.
Color: Cooling Blue Cover, Size: Queen (Pack of 2)
These pillows are everything described on the site. They do retain shape and don’t flatten out after sleeping all night. They are nice and clean looking and comfortable. The fit on my king size bed is perfect cause I prefer the size to king size. Haven’t had to wash them yet but I have had other pillows with the same material inside and the wash ability is great.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
Joe
Phoenix, US
★★★★★ 5
Great pillow
Color: Cooling Blue Cover, Size: Queen (Pack of 2)
The pillows feel great. Being able to remove portions of the interior allowed me and my wife to have a perfect fit. They do stay cool which seems to have helped with my restlessness.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
Mopardodgegirl
Fort Morgan, US
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
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Reviewed in the United States on June 2, 2026

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