Mini phone Plug Adapters

Commonly older non-smart phone Cell phone headsets used  2.5mm jacks. Adapters allow them to be used with standard 3.5mm Stereo mini plug connector headphones.
3.5mm is equivalent to 0.13780"or about 9/64 but we call the connector 3.5mm or  1/8".  
2.5mm  is equivalent to 0.098425" or around 3/32".
TRS means "Tip, Ring, Sleeve, which describes the mating contacts. TRRS would therefore mean "Tip, Ring, Ring, Sleeve, which would have 4 contacts - enough for Stereo Audio and microphone when a common ground is used for all signals. TRS has enough contacts for Stereo Audio or mono audio and a microphone if a common ground connection is used.

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  • 1/4" Female Stereo Jack to 3.5mm Male Stereo Plug Adapter
    35-551 $1.00 Add To Cart
    1/4" Female Stereo Jack to 3.5mm Male Stereo Mini Plug Adapter. Large headphone jack to small headphone jack adapter to use full size, higher end headphones with portable audio devices or smart phones.  Nickel...
  • Stereo 3.5mm female to female feed thru adapter
    30-295 $2.25 Add To Cart
    Stereo 3.5mm female to female feedthru adapter. Fits in Wall plates, panels or any bulkhead with 3/8" hole. Has female connections on both sides. Stereo TRS connections for stereo audio or other types of signals such as IR...
  • 3.5mm female stereo mini phone jack to 1/4” male Stereo phone plug Adapter
    35-550 $1.00 Add To Cart
    3.5mm female stereo mini phone jack to 1/4” male Stereo phone plug Adapter. Small headphone jack to large headphone jack adapter to use earbuds or portable headphones with Receivers or Mixing boards...
  • 1/4" Stereo female jack to 3.5mm male Stereo Mini plug Adapter
    35-551-NK $1.30 Add To Cart
    1/4" Stereo female jack to 3.5mm male Stereo Mini plug Adapter.  Takes a full size 1/4" Stereo Headphone plug and adapts it to fit stereo mini plug jacks, such as on iPhones, Android smartphones, iPods, MP3 players,...
  • Dual female Stereo RCA to one male 3.5mm Stereo mini phone plug adapter
    35-557 $2.99 $1.99 Add To Cart
    Dual female Stereo RCA to one male 3.5mm Stereo mini phone plug adapter. Use this adapter with a standard Stereo RCA male to male cable to connect your smartphone , iPod or Mp3 player to your stereo, or computer sound...
  • 1/4" Stereo female jack to 3.5mm male Stereo Mini plug Adapter
    35-551G $2.65 Add To Cart
    1/4" Stereo female jack to 3.5mm male Stereo Mini plug Adapter. Connect full sized Headphone connectors to mini jack headphone connectors. 1/4" female phone jack 3.5mm male stereo mini phone plug Gold plated...
  • 3.5mm mono Y splitter adapter
    35-519G $1.75 Add To Cart
    3.5mm mono Y splitter adapter.  Shielded  Y-adapter One 3.5mm mono plug Two 3.5mm mono jacks Gold plated connectors Calrad 35-519G
  • 3.5mm Stereo female Jack to Dual RCA Plug adapter cable. Calrad 35-558-6
    35-558-6 $2.83 Add To Cart
    3.5mm Stereo female Jack to Dual RCA Plug adapter cable, 6 feet long. Calrad 35-558-6 Stereo 3.5mm Female Dual RCA male 6 feet long Connect a 3.5mm Stereo cable to Dual RCA Stereo Inputs on a Receiver or Home Theater...
  • 3.5mm female stereo mini plug to 1/4" male stereo phone plug
    35-550G $1.35 Add To Cart
    3.5mm female stereo mini plug to 1/4" male stereo phone plug.  Plug a small portable electronics style headset into a large headphone jack such as on a Receiver,  Home theater system or boom box.  Stereo 3...
  • Calrad 30-295G
    30-295G $2.70 Add To Cart
    Stereo 3.5mm female to female, gold plated feedthru adapter.  Fits in Wall plates, panels or any bulkhead with 3/8" hole. Has female connections on both sides. Stereo TRS connections for stereo audio or other types of...
  • 3.5mm female Stereo Jack to 3.5mm male Mono Plug Adapter
    35-552 $0.90 Add To Cart
    3.5mm female Stereo Jack to 3.5mm male Mono Plug Adapter. Nickel plated contacts Stereo to mono adapter for various uses Plastic Body 3.5mm Stereo female 3.5mm Mono male  Calrad...
  • RCA female to 3.5mm mono plug adapter
    35-538P $0.90 Add To Cart
    RCA female to 3.5mm mono plug adapter. Plastic body RCA type pin jack to miniature 3.5mm mono plug. Nickel plated Shielded Calrad 35-538-P
  • 3.5mm female mono jack to RCA male plug
    35-539 $1.80 Add To Cart
    3.5mm female mono jack to RCA male plug.  Shielded solid metal adapter Nickel plated 3.5mm mono jack RCA plug Calrad 35-539
  • 35-506
    35-506 $1.62 Add To Cart
    1/4" female mono plug to 3.5mm male mono mini phone plug adapter.  Shielded  Nickel plated 1/4" female 3.5mm male Calrad 35-506
  • 2.5mm female mono jack to 3.5mm male mono plug adapter back
    35-541 $1.55 Add To Cart
    2.5mm female mono jack to 3.5mm male mono plug adapter.  Shielded solid metal adapter Nickel plated 2.5mm mono jack 3.5mm mono plug Calrad 35-541
  • RCA female to 3.5mm male mini phone plug adapter
    35-512 $1.42 Add To Cart
    RCA female to 3.5mm male mini phone plug adapter.  Shielded Nickel plated adapter RCA female 3.5mm male Calrad 35-512
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