---
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: "€ 58.68"
currency: EUR
in_stock: true
reviews_count: 8
category: "Sony"
url: https://www.desertcart.nl/products/59550280-new-sony-calibration-mic-measurement-microphone-ecm-ac2-part-number
store_origin: NL
region: Netherlands
---

# 75 dB SNR - precision calibration Compact 5x3.5x0.7 in - sleek fit Corded electric - reliable power 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:** € 58.68
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your home theater sound — calibrate like a pro with Sony precision!

## 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?** € 58.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/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

- • **Trusted Sony Quality:** Genuine OEM part ensuring durability and perfect performance every time.
- • **Seamless Compatibility:** Works with 150+ Sony AV receivers for effortless home theater optimization.
- • **Auto Calibration Optimizer:** Smart setup mic that auto-tunes your system for immersive sound clarity.
- • **Precision Audio Calibration:** Achieve flawless speaker balance with Sony’s 75 dB signal-to-noise ratio mic.
- • **Compact & Lightweight Design:** At just 1.44 oz and slim profile, it fits discreetly in any setup.

## Overview

The Sony ECM-AC2 Calibration Microphone is a genuine OEM accessory designed for precise auto-calibration of over 150 Sony AV receivers. Featuring a high 75 dB signal-to-noise ratio and a compact, lightweight form factor, it ensures optimal speaker output levels for an immersive home theater experience. Powered by a corded electric source, this boundary microphone delivers reliable, professional-grade audio measurement and setup.

## 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: Good replacement - Works great
Review: Does what it's designed to do! - I misplaced my calibration mike years ago...needed a replacement as I've changed speakers and added a rear channel. This microphone was identical to the original, and after calibration, my system sounds great again! I did trip over the signal wire twice because it's thin and black and I was preoccupied. Might be better if these were made in day-glow orange!

## 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 |
| Best Sellers Rank | #18 in Professional Video Microphones |
| Customer Reviews | 4.6 4.6 out of 5 stars (496) |
| Date First Available | July 24, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 ounces |
| Item dimensions L x W x H | 5 x 3.5 x 0.7 inches |
| Item model number | 154277421 |
| Manufacturer | Sony |
| Microphone Form Factor | Boundary |
| Number of Channels | 1 |
| Other display features | Wireless |
| Power Source | Corded Electric |
| Product Dimensions | 5 x 3.5 x 0.7 inches |
| Signal-to-Noise Ratio | 75 dB |
| Special features | 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:** 0.09 Pounds
- **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

### ⭐⭐⭐⭐⭐ Good replacement
*by R***R on December 5, 2025*

Works great

### ⭐⭐⭐⭐⭐ Does what it's designed to do!
*by R***D on December 26, 2024*

I misplaced my calibration mike years ago...needed a replacement as I've changed speakers and added a rear channel. This microphone was identical to the original, and after calibration, my system sounds great again! I did trip over the signal wire twice because it's thin and black and I was preoccupied. Might be better if these were made in day-glow orange!

### ⭐⭐⭐⭐⭐ It works
*by J***E on December 1, 2025*

It worked for my Sony amp and an Onkyo amp I calibrated so no complaints here. Much better than doing it manually.

## Frequently Bought Together

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-25*