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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4.9 ★★★★★
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Meeikal
San Leandro, US
★★★★★ 5
Solid choice for fuse holder
Size: 300A Fuse Holder
It’s awesome, solid connections for running 0 gauge wire. No issues after using for months! Might upgrade to using 0 gauge wire ferrules to use with this but for now everything is working well.
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Reviewed in the United States on January 14, 2026
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Dana
Carnegie, US
★★★★★ 5
Would buy again
Size: 300A Fuse Holder
Works as described
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Reviewed in the United States on April 13, 2026
W
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Will Peppers jr
Massapequa, US
★★★★★ 5
I can wire my 0gage wre finally
Size: 300A Fuse Holder
The speed of service and delivery fused at different Amps voltage to purchase appearance is always a great addition and skar audio is always a head of the game I love skar audio I have been running their RP series amps I have all of them except the 4500.1 I bought this for my 07 Wolfsburg jetta with a 15 dual 2ohm down to 1ohm with the RP 3500.1 and it slumps and hits so low the skar box foe my single 15evl series..is tuned to 30htz..n when it hits that level and lower man u know it ..o call it the 23htz (23hurter)..explosive always excellent quality and functionality thanks 😊
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Reviewed in the United States on January 28, 2025
K
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Kraig Cash
Chelsea, US
★★★★★ 5
Top notch
Size: 300A Fuse Holder
Very good quality
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Reviewed in the United States on January 8, 2026
A
Verified Purchase
Awesome works just like they said it does.
Fort Morgan, US
★★★★★ 5
It’s good
Size: 300A Fuse Holder
It does it’s job.
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Reviewed in the United States on January 18, 2026

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