Secondhand Audio — Verified-member marketplace · Montréal

Buy, sell and trade gear between verified members.

Pre-owned audio, DJ equipment and instruments. Every item is inspected and tested in store, every seller is identity-verified and every payment runs through Rectangle Triangle. Leave your item on consignment or keep it at home until it sells.

01 / Listings

Currently available

First listings are coming shortly. Submit your item below to help open the market.

02 / How it works

Four steps, no transactions between strangers

  1. Verification

    Create an account, then show government ID once, in store or on a video call. Buyers and sellers are both verified.

  2. Submission

    Fill in the form below with brand, model, condition and asking price. We reply within 2 business days with a market estimate.

  3. Inspection and listing

    We test, photograph, grade and check the serial number. The listing goes live here and in the shop.

  4. Payment and handover

    The buyer pays Rectangle Triangle online or in store. The seller is paid by e-transfer within 7 days once the guarantee period ends.

03 / Ways to sell

Consignment, remote sale or trade

  • In-store consignment

    Leave the item at 1290 Atateken. We display it, demo it to buyers and ship it worldwide. 90-day term, renewable. 20% commission.

  • Listed, item stays with you

    You keep the item. It is inspected once for the listing, then brought to the shop only when it sells. 15% commission.

  • Member-to-member trade

    Two members swap gear. Both items are inspected and the handover happens in store. Flat $25 fee per party.

Items valued over $1,000 get a detailed appraisal and priority placement at no extra cost.

04 / Safety

What keeps every transaction clean

  • Verified members

    Identity confirmed once. No anonymous listings, no personal contact details exchanged before the sale.

  • Tested and graded

    Every input, output, fader and pot is tested. Condition is graded and documented with photos.

  • Serial numbers checked

    Checked against stolen-gear registries. A flagged item is declined and the rightful owner is notified.

  • Payment through RT, 7-day guarantee

    No money changes hands between individuals. The buyer has 7 days to report an undisclosed fault. Receipt and invoice on every sale.

05 / Submit

Submit your item

One submission per item. Not a verified member yet? Submit anyway and we schedule verification with you.

Photos: we send an upload link after submission. By submitting you confirm you are the item’s rightful owner.