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Two gold-plated 3.5 mm TRRS male plugs with four screw-terminal blocks

BUCIER

BUCIER SHAN-21 3.5mm TRRS Male to 4 Screw Terminal Adapter 2-Pack

SKU CH-D3Z6-5G085

Two solderless 3.5 mm TRRS male plugs break out to four screw terminals each for custom audio wiring

  • First connectorAuxiliary
  • Connector finishGold
  • Units per package1
  • DetailsSHANFEILU
  • Product weight0.02 kg
  • Solderless wiring with just a small screwdriver
  • Gold-plated contacts for reliable signal transfer
  • TRRS male plug carries stereo audio plus microphone
  • Four screw terminals map to left, right, mic and ground
  • Two adapters included for multiple connections

TRRS adapter for custom wiring

This BUCIER SHAN-21 adapter converts a 3.5mm 4-pole male plug to four screw terminals. It suits installers and hobbyists who need a solderless connection for microphone, earphone or audio-video signals. The gold-plated contacts ensure reliable signal transfer across left, right, microphone and ground channels. Two adapters are included in the pack.

Passive connector with no active cooling

The adapter is a passive component that draws no power and generates no heat during normal use. It operates silently because it contains no fans, electronics or moving parts. Signal quality depends on the tightness of the screw terminals and the wire gauge chosen by the installer. No external power supply is required for operation.

Screw terminals replace soldering

Each terminal accepts stranded or solid-core wire secured by a small screw, removing the need for solder, crimps or electrical tape. The four terminals are labelled for left, right, microphone and ground to simplify wiring. This design allows quick reconfiguration of custom cables or test jigs in the field. The pack provides two identical units for stereo or duplicate connections.

How it compares

Measured against everything we stock in Audio Jack & RCA Adapters, at today’s prices. Recalculated every night.

Price $20.99
Pricier than about 63% of the 1,324 comparable items (median $16.99).

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Specifications

Product
Brand nameBUCIER
Model nameSHAN-21
Ports & slots
First connectorAuxiliary
Size & build
Connector finishGold
Product weight0.02 kg
In the box
Units per package1

Questions about this item

How do I install the SHAN-21 adapter without soldering, and what step do people often miss?

Strip each wire, insert it into the correct screw terminal — L, R, V, or Ground — then tighten the small screw; the step often missed is matching each conductor to its labelled terminal before securing.

What maintenance or replacement will the SHAN-21 need later?

The gold-plated contacts resist corrosion, so only occasional re-tightening of the four terminal screws is needed if vibration loosens them over time.

What limit appears first when the SHAN-21 is used continuously?

The 3.5 mm TRRS plug and screw-terminal block are passive, so the first limit is the current rating of the connected wires, not the adapter itself.

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