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Two silver 1/4 inch TRS to TS audio adaptors side by side

Hosa Technology

Hosa Technology GPP-290 1/4" TRS to 1/4" TS Adaptor

SKU CH-831S-02MZ6

Adapts a 1/4" TRS plug to a 1/4" TS jack for connecting balanced outputs to unbalanced inputs

  • Maintains signal integrity for clear audio reproduction
  • Robust construction withstands frequent use reliably
  • Connects 1/4" TRS sources to 1/4" TS inputs
  • Works with microphones, guitars and other instruments
  • Pack includes two adaptors for multiple connections

Audio Adaptor for Balanced-to-Unbalanced Conversion

The Hosa Technology GPP-290 adaptor converts a 1/4" TRS balanced connection to a 1/4" TS unbalanced plug. It is intended for musicians, engineers and home-studio owners who need to link balanced outputs to gear that only accepts unbalanced inputs. The pack contains two adaptors for stereo pairs or spare units. Reliable signal transfer is maintained across the connection.

Replaces Improvised Wiring or Mismatched Cables

This adaptor removes the need for custom cables or jury-rigged jack combinations when connecting TRS sources to TS-only equipment. The upgrade is worth it whenever a balanced line-level output must feed an unbalanced instrument input, effects pedal or older amplifier. It preserves the signal path without introducing the noise or intermittent contact common with loose adapters.

Stable Signal Under Continuous Use

The metal housing and secure jack seating resist wear from repeated insertion and stage movement. Contact resistance stays low during long sessions, so the signal remains clean without crackle or drop-outs. The design handles the mechanical stress of live performance and daily studio patching without degrading audio quality over time.

Highlights

  • Maintains signal integrity for clear audio reproduction
  • Robust construction withstands frequent use reliably
  • Connects 1/4" TRS sources to 1/4" TS inputs
  • Works with microphones, guitars and other instruments
  • Pack includes two adaptors for multiple connections

Specifications

No published specifications for this item yet.

Questions about this item

What type of 1/4" jack does the GPP-290 TRS plug need to fit into?

The TRS plug on the GPP-290 fits any standard 1/4" TRS balanced socket found on professional audio gear, mixing consoles, and instrument amplifiers.

How do you connect the GPP-290 and which orientation is correct?

Insert the TRS end into the balanced output or headphone jack and the TS end into the unbalanced input; the adaptor is passive so signal flows either way but matching source to destination avoids level mismatch.

When should the GPP-290 be replaced due to wear?

Replace the adaptor if the plug shells loosen, contacts oxidise causing crackle, or the insulator cracks — typically after heavy stage use or repeated insertion cycles.

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