---
product_id: 59550280
title: "New Sony Calibration Mic Measurement Microphone ECM-AC2 Part Number 154277421 1-542-670-21 154271011 1-542-710-11 154267021 1-542-774-21, Auxiliary"
brand: "sony"
price: "S$58"
currency: SGD
in_stock: true
reviews_count: 8
category: "Sony"
url: https://www.desertcart.sg/products/59550280-new-sony-calibration-mic-measurement-microphone-ecm-ac2-part-number
store_origin: SG
region: Singapore
---

# 75 dB Signal-to-Noise Ratio Compact 5x3.5x0.7 inch Design 3.5mm Mono Jack Connectivity New Sony Calibration Mic Measurement Microphone ECM-AC2 Part Number 154277421 1-542-670-21 154271011 1-542-710-11 154267021 1-542-774-21, Auxiliary

**Brand:** sony
**Price:** S$58
**Availability:** ✅ In Stock

## Summary

> 🎧 Tune in like a pro — calibrate your soundscape flawlessly!

## Quick Answers

- **What is this?** New Sony Calibration Mic Measurement Microphone ECM-AC2 Part Number 154277421 1-542-670-21 154271011 1-542-710-11 154267021 1-542-774-21, Auxiliary by sony
- **How much does it cost?** S$58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/59550280-new-sony-calibration-mic-measurement-microphone-ecm-ac2-part-number)

## Best For

- sony enthusiasts

## Why This Product

- Trusted sony brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pro-Level Sound Tuning:** Join the elite audiophiles who demand perfect audio calibration every time.
- • **Seamless Compatibility:** Works flawlessly with 150+ Sony AV receivers for effortless setup.
- • **Unidirectional Clarity:** Focuses on accurate speaker output by isolating ambient noise.
- • **Plug & Play Convenience:** Simple 3.5mm jack connection means zero hassle, all gain.
- • **Precision Auto Calibration:** Optimize your home theater sound with Sony’s exacting measurement mic.

## Overview

The Sony ECM-AC2 Calibration Microphone is a professional-grade, unidirectional measurement mic designed for precise auto calibration of over 150 Sony AV receivers. Featuring a 75 dB signal-to-noise ratio and a compact form factor, it ensures optimal speaker output levels via a simple 3.5mm mono jack connection, making it an essential tool for audiophiles and home theater enthusiasts seeking flawless sound performance.

## Description

SONY ECM-AC2 Calibration Microphone will work with these SONY receivers (about 150 models and more Sony receivers with other brands not listed here); BDV-E300, BDV-E370, BDV-E570, BDV-E580, BDV-E500W, BDV-E770W, BDV-E780W BDV-IS1000, BDV-IT1000, BDV-T10, BDV-T11, BDV-T57 BDV-T58, BDV-HZ970W, DAV-DX155, DAV-DZ170 DAV-DZ171 DAV-DZ175 DAV-DZ1000, DAV-DZ110, DAV-DZ111, DAV-DZ118K, DAV-DZ119, DAV-DZ120, DAV-DZ120K, DAV-DZ150K, DAV-DZ151KB, DAV-DZ210D, DAV-DZ230, DAV-DZ231, DAV-DZ250M, DAV-DZ260, DAV-DZ266K, DAV-DZ270, DAV-DZ275M, DAV-DZ280, DAV-DZ360WA, DAV-DZ361W, DAV-DZ370, DAV-DZ3K, DAV-DZ410, DAV-DZ520K, DAV-DZ530, DAV-DZ531W, DAV-DZ555M, DAV-DZ556KB, DAV-DZ560, DAV-DZ570, DAV-DZ570M, DAV-DZ620K, DAV-DZ630, DAV-DZ660, DAV-DZ665K, DAV-DZ670M, DAV-DZ680, DAV-DZ720, DAV-DZ750K, DAV-DZ777, DAV-DZ77T, DAV-DZ7T, DAV-DZ810W, DAV-DZ820KW, DAV-DZ830W, DAV-DZ850KW, DAV-DZ850M, DAV-DZ860W, DAV-DZ870M, DAV-DZ870W, DAV-DZ970WA, DAV-F200, DAV-F500, DAV-FX900KW, DAV-FXG99K, DAV-FXG9K, DAV-HDX265, DAV-HDX275, DAV-HDX285, DAV-HDX277WC, DAV-HDX287WC, DAV-HDX501W/S, DAV-HDX585, DAV-HDX587WC, DAV-HDX589W, DAV-IS10, AV-IS50, DAV-X10, HT-DDW1500, HT-DDW1600, HT-DDW5000, HT-DDW680, HT-DDW700, HT-DDW7000, HT-DDW780, HT-DDW880, HT-DDW885, HT-DDW890, HT-DDWG800, HT-IS100, HTP-36DW, HTP-36SS, HTP-78DW, HTP-78SS, HT-SF470, HT-SF1000, HT-SF1100, HT-SF1200, HT-SF1300, HT-SF2000, HT-SF2300, HT-SS360 HT-SS370, HT-SS380, HT-SS1000, HT-SS1000P, HT-SS1100, HT-SS1200, HT-SS1300, HT-SS2300, STR-DA1200ES, STR-DA1800ES, STR-DA2800ES, STR-DA3200ES, STR-DA3300ES, STR-DA3400ES, STR-DA3500ES, STR-DA3600ES, STR-DA3700ES STR-DA4600ES, STR-DE400, STR-DG500, STR-DG520, STR-DG600, STR-DG700, STR-DG710, STR-DG720, STR-DG800, STR-DG820, STR-DG910, STR-DG1000, STR-DH500, STR-DH520, STR-DH540, STR-DH550, STR-DH710, STR-DH720, STR-DH720HP, STR-DH740, STR-DH740, STR-DH750, STR-DH770, STR-DH790, STR-DH800, STR-DH810, STR-DH820, STR-DH830, STR-DN840, STR-DN850, STR-DN860, STR-DN1005D, STR-DN1010, STR-DN1020, STR-DN1030, STR-DN1040, STR-DN1050, STR-DN1060, STR-DN1070, STR-DN2010, STR-KG800, STR-KS370

Review: Great replacement - Works great. I had tossed my old calibration microphone. Oops. This one worked great.
Review: Good - Worked fine

## Features

- Genuine SONY ECM-AC2 Calibration Microphone for SONY Audio Video Receiver Home Theater systems. Pic 2 shows common Error Codes in the event that auto calibration fails. The auto calibration process may fail if the front and surround speakers or microphone are not properly connected.
- The Sony Calibration Measurement Microphone are compatible with most Sony receivers for calibrating correct speaker output levels.
- For a list of compatible Sony receivers (about 150 models) scroll down to see Product Description below.
- (Pic 2) shows common Error Codes in the event that auto calibration fails. The auto calibration process may fail if the front and surround speakers or microphone are not properly connected.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075QGCLWR |
| Antenna Location | Calibration Optimizer Microphone for Speakers SONY AV Receiver |
| Audible Noise | 75 db |
| Best Sellers Rank | #32 in Professional Video Microphones |
| Brand | Sony |
| Built-In Media | microphone |
| Color | Black |
| Compatible Devices | Home Theater |
| Connectivity Technology | Auxiliary |
| Connector Type | 3.5 mm 1/8" mono Jack Plug |
| Customer Reviews | 4.7 out of 5 stars 525 Reviews |
| Item Dimensions | 5 x 3.5 x 0.7 inches |
| Item Weight | 1.44 ounces |
| Manufacturer | Sony |
| Mfr Part Number | 43235-69996 |
| Microphone Form Factor | Boundary |
| Model Number | 154277421 |
| Number of Channels | 1 |
| Polar Pattern | Unidirectional |
| Power Source | Corded Electric |
| Recommended Uses For Product | Calibration Optimizer Microphone for Speakers SONY AV Receiver |
| Signal-to-Noise Ratio | 75 db |
| Special Feature | Auto Calibration Measurement Optimizer Setup Microphone for AV Receivers |

## Product Details

- **Brand:** Sony
- **Color:** Black
- **Compatible Devices:** Home Theater
- **Connectivity Technology:** Auxiliary
- **Connector Type:** 3.5 mm 1/8" mono Jack Plug
- **Included Components:** microphone
- **Item Weight:** 1.44 ounces
- **Polar Pattern:** Unidirectional
- **Recommended Uses For Product:** Calibration Optimizer Microphone for Speakers SONY AV Receiver
- **Special Feature:** Auto Calibration Measurement Optimizer Setup Microphone for AV Receivers

## Images

![New Sony Calibration Mic Measurement Microphone ECM-AC2 Part Number 154277421 1-542-670-21 154271011 1-542-710-11 154267021 1-542-774-21, Auxiliary - Image 1](https://m.media-amazon.com/images/I/61y-m9cqE2L.jpg)

## Questions & Answers

**Q: Will this work with a Sony strdh790**
A: This should work!

**Q: how long is the cord?**
A: 15 feet

**Q: Will this work with my yamaha cx-a 5200?**
A: No

**Q: Will this work with the model str-k700?**
A: In my experience so far calibration much are universal.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great replacement
*by C***� on May 28, 2026*

Works great. I had tossed my old calibration microphone. Oops. This one worked great.

### ⭐⭐⭐⭐⭐ Good
*by D***R on April 29, 2026*

Worked fine

### ⭐⭐⭐⭐⭐ Sony mic
*by J***. on March 7, 2026*

Item arrived on time. Item as described.

## Frequently Bought Together

- New Sony Calibration Mic Measurement Microphone ECM-AC2 Part Number 154277421 1-542-670-21 154271011 1-542-710-11 154267021 1-542-774-21, Auxiliary
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-11-10*