---
product_id: 89849903
title: "EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black)"
brand: "earstudio"
price: "$0.03"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/89849903-earstudio-es100-24bit-portable-high-resolution-bluetooth-receiver-headphone-amp
store_origin: US
region: United States of America
---

# 24-bit Dual DAC/AMP for studio-grade sound Bluetooth 5.0 with AAC, aptX & aptX HD 14 hours continuous wireless playback EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black)

**Brand:** earstudio
**Price:** $0.03
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your audio game—because your ears deserve the best.

## Quick Answers

- **What is this?** EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black) by earstudio
- **How much does it cost?** $0.03 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/89849903-earstudio-es100-24bit-portable-high-resolution-bluetooth-receiver-headphone-amp)

## Best For

- earstudio enthusiasts

## Why This Product

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

## Key Features

- • **Smart Hands-Free Calls:** Built-in microphone lets you take calls effortlessly without swapping devices or losing sound quality.
- • **All-Day Wireless Freedom:** Up to 14 hours of uninterrupted playback keeps your vibe alive from morning meetings to evening unwind.
- • **Studio-Quality Sound On The Go:** Dual Asahi Kasei AK4375a DACs deliver pristine, high-res audio for your wired headphones.
- • **Precision Analog Volume Control:** Programmable gain amplifier ensures flawless audio performance even at the lowest volumes—hear every detail.
- • **Seamless Bluetooth 5.0 Connectivity:** Supports AAC, aptX, and aptX HD codecs for crystal-clear, low-latency streaming across all your devices.

## Overview

The EarStudio ES100 MK2 is a compact, 24-bit portable Bluetooth receiver and headphone amplifier featuring dual high-fidelity DACs, Bluetooth 5.0 with advanced codecs (AAC, aptX, aptX HD), and up to 14 hours of wireless playback. Designed for audiophiles and professionals, it enhances any wired headphones with studio-quality sound, precise analog volume control, and hands-free call support—all in a sleek, lightweight form factor.

## Description

This thumb-sized gadget is packed with technology, supporting Qualcomm aptX HD codec. This allows you to stream 24-bit high resolution music. EarStudio automatically expands 16-bit music to 24-bit sound. EarStudio focuses on sound quality with convenience and affordability. We use CSR 8675 Qualcomm Chip and AK4375a 2x DAC. Noise-free, Jitter-free The EarStudio ES100 MK2 plays sound through Bluetooth with Radsone's patented DCT technology to reduce subtle digital noise and eliminate jitter from Bluetooth streaming. Dual DAC EarStudio with analog volume features a circuit architecture that optimizes its own DualDrive technology using two independent Hi-Fi DAC and amplifiers. Unlike other dual DAC audio systems, the fully differential audio signal path connects directly to the output jack, no switch components, no loss or distortion to output pure signal. Furthermore, two selectable operating modes support double current or double voltage as needed, depending on the type of connected headphones. Next, we took the details by adopting analog volume control. Digital volume adjustment scales down PCM audio samples before D/A conversion, resulting in harsh sound and loss such as hard decation, SNR, and THD. EarStudio provides analog volume control to maintain optimum audio performance even at low volume, using the programmable gain amplifier (PGA), the best way to control volume. EarStudio provides two outputs with a single end/double current 3.5mm jack and a full balance/double voltage 2.5mm jack.

## Features

- 24-bit Bluetooth Receiver WIRELESS designed to provide studio quality sound in your ears - use your existing wired headphones, earphones, or speakers
- Dimensions 1 x 2 x 0.5 inches / Weight 20g / 14 hours continuous playback / 10 band EQ and Ambient Mode / USB Audio Playback / Device Firmware Updated
- Includes two independent Hi-fi DAC and amplifiers (Asahi Kasei AK4375a) - Dual DAC/AMP design ideal for both single-end output and full differential output
- Analog volume control maintains optimal audio performance even at low volume with a programmable gain amplifier (PGA), known as the best way to control volume
- Built-in microphone supports answering calls when using earphones without microphone

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Name | ES100 MK2 |
| Connectivity Technology | Wireless |
| Wireless Communication Technology | Bluetooth |
| Included Components | Headphones |
| Age Range (Description) | Adult |
| Compatible Devices | Headphones, Earphones, Speakers, Bluetooth-enabled Devices, 3.5mm Audio Jack Devices |
| Control Type | Volume Control |
| Cable Feature | Without Cable |
| Item Weight | 0.02 Kilograms |
| Water Resistance Level | Water Resistant |
| Control Method | App |
| Audio Driver Type | Balanced Armature Driver |
| Bluetooth Version | 5.0 |
| Earpiece Shape | over_ear |
| Series number | 1 |
| Manufacturer | RADSONE |
| Form Factor | In ear, In Ear |
| Item Height | 0.5 Inches |
| Item Width | 2 Inches |
| Product Dimensions | 2.54 x 5.08 x 1.27 cm; 20 g |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Item model number | ES100 MK2 |
| Audio Details | Headphones |
| Are Batteries Included | Yes |
| Lithium Battery Energy Content | 1.29 Watt Hours |
| Lithium Battery Weight | 0.1 g |
| Number of Lithium Ion Cells | 1 |
| Item Weight | 20 g |

## Product Details

- **Brand:** EarStudio
- **Colour:** EARSTUDIO ES100 MK2
- **Ear Placement:** Over Ear
- **Form Factor:** Over Ear
- **Headphones Jack:** 3.5 mm Jack

## Images

![EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black) - Image 1](https://m.media-amazon.com/images/I/71o9zYwFOnL.jpg)
![EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black) - Image 2](https://m.media-amazon.com/images/I/71lG3wJiXxL.jpg)
![EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black) - Image 3](https://m.media-amazon.com/images/I/710lcDkvYXL.jpg)
![EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black) - Image 4](https://m.media-amazon.com/images/I/51tyicSNi9L.jpg)
![EarStudio ES100-24bit Portable High-Resolution Bluetooth Receiver/Headphone Amp/DAC with AAC, aptX, aptX HD (Black) - Image 5](https://m.media-amazon.com/images/I/61JJW+Fi2nL.jpg)

## Questions & Answers

**Q: What happens if you plug in a headset that has a mic and/or controls. Do they merely not work, or do they cause problems?**
A: The music still plays but the mic and controls will not work. I verified this with a pair of Sony xb50ap. If you're only concern is music, you're good to go. Love the EarStudio btw, and plan to write a 5 star review soon.

**Q: Will EarStudio send AAC codec audio to my iphone 7/8/X?**
A: Hi there, yes, but in detail, ES100 supports AAC codec, and iPhone would stream audio to ES100 over AAC codec.

**Q: Will this be available for international shipping?**
A: Hi there, we are working on the FBA export. Hopefully it EarStudio will be soon available for international shipping. Thank you!

**Q: Can i connect the es100 in usb mode (connected to my pc) to my sony wh1000xm3 via bluetooth?**
A: You're trying to use this to connect a Bluetooth headphone to your PC? Nope. This isn't a transmitter. You'd use this to connect wired headphones to a phone or PC that can already transmit Bluetooth, or to connect wired headphones to USB (like, if your device doesn't have a headphone output or the built-in one sounds lousy). You need a USB Bluetooth adapter.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*