# SIMGOT EA1000 Fermat
- **Product Page**: https://chi-fi.top/iem/simgot-ea1000
- **Category**: Earphones
- **Brand**: SIMGOT
- **Price**: from $219 USD
- **Summary**: All-metal dynamic-driver earphones with a passive radiator and swappable nozzles
- **AliExpress**: https://s.click.aliexpress.com/e/_c3Y3Ace7

## Pros
- Superb technical performance: wide, holographic soundstage and class-leading resolution
- Tight, fast bass with natural decay from the passive radiator
- Three swappable nozzles that genuinely shift vocal presence and treble balance
- Mirror-finished CNC stainless-steel shells with crystal faceplates

## Cons
- Energetic treble that can sound bright or sharp to treble-sensitive ears
- Lower mids can feel lean if you prefer thick, warm vocals
- Heavy metal shells (11 g per side)
- Cable terminates in a fixed 3.5 mm plug with no modular 4.4 mm balance option

## Specifications
- **Release year**: 2023
- **Drivers per side**: 1
- **Driver types**: dynamic
- **Impedance**: 16 Ω
- **Sensitivity**: 127 dB/V
- **Frequency response, low end**: 10 Hz
- **Frequency response, high end**: 50000 Hz
- **Cable connector**: 0.78 mm 2-pin
- **Plugs**: 3.5 mm
- **Shell material**: Stainless steel
- **Weight**: 11 g

## Details & Specifications
The SIMGOT EA1000 Fermat sits in the $200-plus bracket as Simgot's flagship dynamic-driver earphone. It pairs a 10 mm dual-magnet, dual-cavity dynamic driver with a purple-gold diaphragm and an unusual 6 mm passive radiator designed to manage ear-cavity pressure and natural bass decay. It arrived in late 2023 and has earned a strong reputation among audiophiles for technical performance that rivals multi-driver sets twice its price.

Reviewers praise its wide, holographic soundstage, precise instrument separation, and fast, clean bass texture. The tuning leans articulate and energetic: vocals are clear and forward, and treble extends with sparkling detail. That energy can lean bright or sharp on aggressive tracks for treble-sensitive listeners, and the lower midrange is neutral rather than warm or thick. Three interchangeable tuning nozzles (brass and two stainless-steel variants) let you fine-tune the upper-mid balance. The mirror-finish stainless-steel shells look premium but are weighty at 11 g per earbud.

- One 10 mm dynamic driver (sputtered purple-gold diaphragm) and one 6 mm passive radiator per side
- Impedance 16 Ω, sensitivity 127 dB/Vrms (easy to drive from a phone or dongle)
- Frequency response 10 Hz to 50 kHz (effective 20 Hz to 20 kHz)
- CNC stainless-steel shells with transparent crystal faceplates
- Three pairs of swappable tuning nozzles (one brass, two stainless steel)
- Detachable silver-plated OFC Litz cable with a 0.78 mm 2-pin connector, 3.5 mm plug
- Weight ~11 g per earpiece
- Released late 2023

> Picks come from research (reviews, specs, community consensus), not hands-on testing. Prices are USD "from" prices and may be out of date. Buy links are affiliate links.