Stinger SHD821 HPM Series MIDI Fused Distribution Block
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Stinger SHD821 HPM Series MIDI Fused Distribution Block

SKU: SHD821
Regular price
$112.50
Shipping information

We offer fast and reliable shipping options to ensure that your order arrives in a timely manner. Our dedicated team works diligently to process and ship your items as quickly as possible.

Here are some key points to note about our shipping policy:

Standard Shipping

  • Frankies offers a $15.95 flat rate for Australia-wide shipping, no matter how many items you order. Some larger or heavier items may incur an additional fee, which will be communicated to you when your order is processed.
  • While we endeavour to dispatch all orders promptly, please be advised that due to the current national fuel shortages in Australia and the resulting pressure on logistics networks, order processing and dispatch may take up to 7 business days. We are not liable for delays caused by third-party freight carriers or fuel-related logistical disruptions. By placing an order, you acknowledge that delivery timeframes may be extended beyond our standard estimates during this period.

Estimated delivery times:

  • WA, NT, and TAS: currently experiencing longer shipping times
  • Holiday periods (e.g. Christmas): deliveries may be delayed due to increased freight volumes

Express Shipping

  • Express shipping is available and calculated based on your delivery location, as well as the size and weight of your order. To receive an accurate quote, please contact our Albion Park Rail store and request an "express shipping quote." Our team will promptly assist with pricing and availability. Payment for express shipping can be securely arranged over the phone.

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Product features

Stinger SHD821 HPM MIDI Fused Distribution Block, 2 Input / 4 Fused Outputs

An HPM Series fused distribution block for large multi-amplifier builds two 1/0GA or 4GA inputs, four fused 4GA or 8GA outputs, four individual fuse positions accepting AFS, Mini ANL, or MIDI fuses. Chrome-plated brass, protective cover included.

Product Overview

The Stinger SHD821 is the larger fused HPM Series distribution block, providing individual output fusing for up to four amplifiers from two high-gauge power inputs. Each of the four outputs has its own fuse position accepting AFS, Mini ANL, or MIDI fuse formats ensuring per-amplifier protection throughout the installation.

Chrome-plated brass construction provides excellent conductivity and corrosion resistance. Fuses are not included, select the appropriate type and rating for each amplifier.

Features & Benefits

  • Individual fuse per output — protects each amplifier connection independently
  • Four fuse positions, accepting AFS, Mini ANL, and MIDI fuse formats
  • Two 1/0GA or 4GA inputs, four fused 4GA or 8GA outputs
  • Chrome-plated brass construction — excellent conductivity and corrosion resistance
  • Corrosion-resistant satin chrome finish
  • Protective cover included
  • Compact space-saving design
  • Fuses not included

Technical Specs

Specification Detail
SKU / Part Number SHD821
Brand Stinger
Series HPM
Number of Inputs 2
Input Gauge 1/0GA or 4GA (max 1/0 AWG)
Number of Outputs 4
Output Gauge 4GA or 8GA (max 4 AWG)
Fused Yes — 4 fuse positions (one per output)
Fuse Types Accepted AFS, Mini ANL, MIDI
Fuses Included No
Material Chrome-plated brass
Finish Satin chrome
Protective Cover Included

Compatible With / Goes Well With

Direct Vehicle Fit:

  • Universal — suitable for any large multi-amplifier power distribution requiring per-output fusing

Goes Well With:

  • Stinger SK4201 0GA / SK4241 4GA amplifier wiring kits (input connections)
  • Stinger SHD820 (fused 1 input / 2 output version for smaller builds)
  • Stinger SHD21 (non-fused 2 input / 4 output version — for comparison)
  • Stinger SPF5880 / SPF58100 / SPF58150 MIDI fuses (sold separately)
  • Car audio amplifiers requiring individual 4GA or 8GA power connections

Frequently Asked Questions

What is the difference between the SHD821 and the SHD820?

The SHD820 has one input and two fused outputs — suited to two-amplifier builds. The SHD821 has two inputs and four fused outputs — suited to four-amplifier builds. Both provide per-output fusing with the same fuse format compatibility.

What is the difference between the SHD821 and the SHD21?

Both have two inputs and four outputs. The SHD21 is non-fused — relying on external main-line fusing. The SHD821 adds individual fuse positions per output, protecting each amplifier independently.

What fuse types and ratings does this block accept?

The SHD821 accepts AFS, Mini ANL, and MIDI fuse formats. Fuse ratings should be selected to match each amplifier's recommended fuse size as stated in the amplifier's installation manual. Fuses are not included.

Why use a 4-output fused block rather than four separate inline fuse holders?

A centralised fused distribution block provides a single, tidy point for all per-amplifier fusing — cleaner than four separate inline fuse holders scattered through the build. It also uses a compact design that saves space in the boot.

Can the two inputs be connected from two separate power sources?

Yes. The dual input design allows two separate power runs — for example, from two batteries in a dual-battery setup — to feed the distribution block, which then splits to four amplifiers.