TRN Conch In-Ear Monitors Review
A wired IEM from TRN that the page describes with a dual-circuit design and a DLC diamond composite diaphragm, listed from $23.94. It comes with three interchangeable nozzle filters and 3.5mm, 2.5mm and 4.4mm connectors included, in STD or With mic versions.

Our verdict
A wired IEM for someone who wants swappable nozzle filters and a choice of 3.5mm, 2.5mm and 4.4mm connectors included, from $23.94. Look elsewhere if you need a listed driver count, impedance or sensitivity, because the listing text gives none of them. The main caveat is that the filter descriptions and the sound wording are the maker's claims, so judge the set by the listed facts and your own listening.
- Best for
- Someone who wants a wired IEM with three nozzle filters and several plug sizes included.
- Skip if
- You need a listed driver count or impedance figure before buying.
TRN Conch is a wired set whose page lists a dual-circuit design and a DLC diamond composite diaphragm in a liquid metal cavity. The page says it comes with three interchangeable nozzle filters and a 4-core silver-plated oxygen-free copper cable, with 3.5mm, 2.5mm and 4.4mm connectors included. It starts at $23.94, and the two orderable options are STD and With mic.
Options and pricing
The page lists two options, STD at $23.94 and With mic at $25.74, and no color choice appears in the variants list. The page crosses out $35 against the starting price; treat that as the store's comparison, which we did not check. The listing text names 3.5mm, 2.5mm and 4.4mm as included connectors rather than as ordering choices.
How it compares
The Moondrop Chu II DSP costs $23.79 and the Tripowin x HBB Kailua costs $24.64, against this page's start of $23.94. The Kinera Celest Wyvern Pro starts at $25. None of the three has a spec line in the data we hold, while this page's spec line lists 3.5mm, 2.5mm and 4.4mm connectors, so connector choice is the one visible difference.
Shipping
- Methods and costs. The store's shipping page offers Standard Shipping (4PX, Yanwen or Yun Express), free for most countries, and Express Shipping (DHL Express, FedEx or SF Express) at 15-50 USD depending on the country, free for orders over 270 USD in most countries (checked 2026-11-11).
- Delivery times. It says an in-stock order ships within 3 working days, Standard takes about 2 weeks after shipping out (up to 1-3 months for some countries, and the store makes no refund for that transit time) and Express takes about 3-7 days. Festive seasons and other circumstances can change the timing.
- Taxes and fees. The buyer pays any customs, import or processing fees. The page says Standard via YunExpress is tax-inclusive for some countries, that remote areas can carry extra Express charges, and that a parcel refused or left uncollected over taxes is deducted two-way freight and may be destroyed with no refund.
- Where it ships. The page says the store can generally ship to most countries by Express and many by Standard, and to confirm Standard with the team for your country. It cannot ship to PO boxes or APO/FPO addresses and can only use Express to Hawaii. It does not name the US, Canada, the UK, Australia or New Zealand, so confirm before you pay.
- Lost parcels. If a parcel has been in transit for at least 3 months, the page offers a one-time reshipment or a full refund for orders under $50 and a 50% refund for orders above $50.
Returns and warranty
- Returns. The return page allows returning any non-customized product that is still factory sealed within 30 days of receiving it, with the buyer paying the shipping. Email [email protected] within that period; the store asks for the return to be shipped within 5 working days of the RMA instructions and in most cases processes a refund within 5 business days of inspecting it (checked 2026-11-11).
- Opened items. A product opened within the first 7 days after delivery can be returned for the price minus a restocking fee of 35% of its retail value, including when it still works properly.
- Refund or credit. The buyer can choose a refund to the original payment method (PayPal or card) or store credit; with no answer within 48 hours of confirmation the default is store credit, which can also be prioritized during promotions, final-sale events and for items 40% or more off retail.
- Not returnable. Customized products, including faceplate designs, are non-refundable, and the page says the same applies to carry cases, cables, ear tips and other accessories, "due to hygiene purposes". If one item in a package is defective, incorrect or missing, the refund or replacement covers only that item.
- Warranty. The page gives a 1-year warranty on products, excluding carry cases, ear tips and other accessories, and 3 months on cables and adapters, from the date of purchase. It covers factory defects that affect proper function, not damage from human error, negligence, accidents, dismantling, water, abuse or modification (checked 2026-11-11).
- Not covered or limited. It does not apply to items bought elsewhere (AliExpress, Amazon, local dealers and the like), prize or giveaway items, normal wear or colour change, commercial use, or items that were stolen or went missing. Coverage is limited for products 40% or more off retail, for review units and for items repaired or modified by anyone Linsoul has not authorized.
- Claims. Email [email protected] with the order number, the issue and photos and videos of the fault. The store may ask for the unit back for a replacement. It covers shipping for some defects reported within 7 days of delivery if the fault can be shown on video or photo; after 7 days the buyer ships it back. For wrong or missing items an unboxing video of the whole sealed parcel is required.
Before you buy
Linsoul says it was founded in 2016 by the Crazy HiFi team to bring Chinese HiFi makers closer to listeners worldwide, and that it now sells other makers' products alongside four brands of its own, THIEAUDIO, Kiwi Ears, ZiiGaat and Tripowin (checked 2026-11-11).
We have not read any independent review of this product or of the store. Ratings and owner reviews shown on the store's own pages are the store's and were not verified.
What we liked
- The page lists a DLC diamond composite diaphragm and a dual-circuit design
- 3.5mm, 2.5mm and 4.4mm connectors are listed as included
- Three interchangeable nozzle filters are listed, marked by black, blue and red sealing rings
- A 4-core silver-plated oxygen-free copper cable is described
Worth noting
- The listing text gives no driver count, driver size, impedance or sensitivity
- The page gives no weight and no cable length
- The filter names and the tuning and sound descriptions are the maker's claims and cannot be checked from the listing
Questions before you buy
Which connectors does the TRN Conch include?
The page lists 3.5mm, 2.5mm and 4.4mm as included connectors, and the spec row repeats those three sizes. It does not explain how the connectors are changed.
What do the three nozzle filters do?
The page names them Reference, Translucent and Atmosphere Enhancement, marked with black, blue and red sealing rings, and says each emphasizes a different audio zone. It gives no figures for any of the three.
What options and prices does it have?
Two options: STD at $23.94 and With mic at $25.74. The page shows $35 crossed out, which is the store's own comparison.
Can I return it if I change my mind?
The return page allows returning a non-customized product that is still factory sealed within 30 days of receiving it, with the buyer paying shipping. An opened product returned within 7 days carries a 35% restocking fee. Refunds go to the original payment method or to store credit, which is the default if you do not choose.
How long does shipping take?
The shipping page says in-stock orders ship within 3 working days. Standard Shipping takes about 2 weeks after shipping out, up to 1-3 months for some countries, and Express takes about 3-7 days. Standard is free for most countries; Express costs 15-50 USD and is free over 270 USD (over $499.99 for large items such as headphones and desktop DAC/AMPs).
Does Linsoul ship to the US, Canada, the UK, Australia and New Zealand?
The page says Linsoul can generally ship to most countries by Express and many by Standard, and to ask the team about Standard for your country. It names no restriction for the US, Canada, the UK, Australia or New Zealand, but it does not list them either, and it can only use Express to Hawaii.
What warranty does it have?
The page gives a 1-year warranty on products from the purchase date for factory defects, not for human error, accidents or modification. Coverage is limited for items 40% or more off retail and for review units, and it does not apply to items bought from other sellers.
Sources & verification
What this review is based on and the day we last read it. Specs and claims from the maker are the maker’s own; the verdict and the rating are ours.
From the store
- TRN Conch product page: specs, options and price (the buy buttons go there)Specs, options and the listed priceRead November 11, 2026
- Linsoul shipping pageStandard and Express shipping, costs and times, import taxes, lost parcels, couriers, trackingRead November 11, 2026
- Linsoul return policy and warranty page30-day returns of sealed items, 35% restocking fee on opened ones, 1-year and 3-month warranties, exclusions, how to claimRead November 11, 2026
- Linsoul support FAQThe same shipping, return and warranty rules in question form, plus order changes and cancellationsRead November 11, 2026
- About LinsoulFounded in 2016 by the Crazy HiFi team; names its own brands; the awards listed there are the store's own accountRead November 11, 2026
What we couldn’t verify
- The page's tuning and sound wording (richer stereo sound, extended high-frequency resolution, customizable sound styles) are the maker's claims and were not checked here.
- Per the page, the DLC diamond composite diaphragm and the dual-circuit design are described without any figures, and the listing text gives no driver count, size, impedance or sensitivity.
- We have not read an independent review of this product or the store, and the store's own ratings were not verified. We read the store's catalog description only: a specification table or image shown just on the live page was not read.
- The shipping page names no US, Canada, UK, Australia or New Zealand times or fees: its figures are general and we could not confirm them for these countries.
Spotted an error or something out of date? Tell us and we’ll fix it and update the date.


