Overview

The Simgot ET142 is Simgot Audio’s first planar magnetic in-ear monitor, combining a 12.5 mm planar magnetic driver with a multilayer piezoelectric ceramic (PZT) tweeter in a compact hybrid design. Available since early 2025 with a current market price of 224.99 USD [1], it ships with four interchangeable tuning nozzles and Simgot’s LC7 732-core mixed OFC/silver-plated Litz cable featuring interchangeable 3.5 mm SE and 4.4 mm balanced plugs [1]. The planar unit is described as a dual-symmetric magnetic construction, and the stock tuning targets the SIMGOT-Golden 2023 response [1].

Scientific Validity

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Manufacturer specifications list frequency response 8 Hz–40 kHz, impedance 14 Ω ± 15% (@1 kHz), and sensitivity 118 dB/Vrms (@1 kHz) [1]. Third-party reporting indicates passive isolation around 10–15 dB depending on fit [4]. As of August 25, 2025, no standardized lab datasets (e.g., 43AG/5128 THD sweeps with conditions disclosed) are broadly available; therefore, evaluation remains provisional and anchored to official specs clearly labeled as such [1]. The multiple swappable nozzles are a verifiable acoustic mechanism, but without controlled FR/THD deltas published, audible benefit magnitude cannot be quantified beyond qualitative reports [2].

Technology Level

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The ET142 implements a dual-symmetric magnetic planar driver paired with a multilayer PZT tweeter and a four-nozzle architecture (Blazed Titanium, Gold-Plated Copper, Stainless-Steel Red-Circle, Stainless-Steel Black-Circle) for mechanical/acoustic tuning [1]. The included LC7 732-core mixed OFC/silver-plated Litz cable with interchangeable 3.5 mm/4.4 mm plugs and 0.78 mm 2-pin connectors reflects current best practice for modularity and low-resistance wiring [1]. Relative to prior Simgot hybrids, this is a modern, well-integrated implementation, though not a category-defining breakthrough.

Cost-Performance

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Cheapest equivalent-or-better comparator: Hidizs MS3 (three screw-in tuning filters) + DUNU Lyre Mini cable (Q-Lock Mini with both 3.5 mm and 4.4 mm plugs included). Current prices: MS3 = 119.00 USD, Lyre Mini = 29.99 USD, combined 148.99 USD [2][3].
Calculation (USD): 148.99 USD ÷ 224.99 USD = 0.662… → 0.7 (rounded to one decimal).
Equivalence note (provisional): Hardware tuning via physical filters/nozzles present; both SE and balanced connectivity fulfilled in-box (ET142) or with the minimum accessory bundle (MS3+Lyre Mini); no credible evidence of inferior basic measured performance within audibility-relevant specs in available catalog/limited third-party information [1][2][3].

Reliability & Support

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The metal housings and robust LC7 cable suggest adequate durability. Linsoul lists a 1-year warranty for IEMs (cable 3 months) [1]. Long-term failure-rate data specific to ET142 are not yet available given its 2025 release window. The nozzle system introduces extra mechanical interfaces but uses standard materials and rings [1].

Rationality of Design Philosophy

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The design emphasizes measurable mechanisms (planar + PZT division of labor, nozzle-based acoustic adjustment) and targets a published in-house response curve (SIMGOT-Golden 2023), avoiding non-falsifiable claims [1]. Absent independent lab verification of transparency-level distortion/FR, the approach is rational but not yet confirmed to deliver fully transparent results.

Advice

ET142 suits listeners who want a planar-based IEM with verified, hardware-level tuning options around 225 USD. The nozzle kit enables meaningful tonality shifts without software EQ [1]. If you specifically need a tunable IEM with both 3.5 mm/4.4 mm connectivity at the lowest possible cost, the MS3 + Lyre Mini combo achieves equivalent user-facing functionality at a lower price [2][3]. Check source pairing: at 14 Ω and 118 dB/Vrms, most low-noise sources will drive ET142 comfortably [1].

References

[1] Linsoul — “SIMGOT ET142 | Advanced Dual-Symmetric Magnetic Planar & PZT IEM”, https://www.linsoul.com/products/simgot-et142, accessed Aug 25 2025. Specs/price: 12.5 mm planar + multilayer PZT; 14 Ω; 118 dB/Vrms; SIMGOT-Golden 2023; LC7 732-core cable; interchangeable 3.5 mm & 4.4 mm plugs; price 224.99 USD.
[2] Hidizs — “HIDIZS MS3 2BA 1DD Hybrid 3 Drivers Hi-Fi In-Ear Monitors”, https://www.hidizs.net/products/hidizs-ms3-2ba-1dd-hybrid-3-drivers-hifi-in-ear-monitors, accessed Aug 25 2025. Three interchangeable tuning filters; current price 119.00 USD.
[3] DUNU — “Lyre Mini (Q-Lock Mini Interchangeable Plug System)”, https://www.dunu-topsound.com/product-page/lyre-mini, accessed Aug 25 2025. Includes 3.5 mm & 4.4 mm plugs; current price 29.99 USD.
[4] Audiophile-Heaven — “Bring Back The Woah Effect – Simgot ET142 IEMs Review”, https://www.audiophile-heaven.com/2025/03/bring-back-the-woah-effect-simgot-et142-iems-review.html, Mar 5 2025. Notes passive isolation ~10–15 dB.

(2025.8.25)