---
product_id: 22622857
title: "Yamaha A-U671 Stereo Amplifier with USB DAC Function"
brand: "yamaha"
price: "$U2917"
currency: UYU
in_stock: false
reviews_count: 6
url: https://www.desertcart.uy/products/22622857-yamaha-a-u671-stereo-amplifier-with-usb-dac-function
store_origin: UY
region: Uruguay
---

# DSD 5.6 MHz playback 70 W + 70 W power ESS SABRE32 DAC Yamaha A-U671 Stereo Amplifier with USB DAC Function

**Brand:** yamaha
**Price:** $U2917
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Elevate Your Sound Experience!

## Quick Answers

- **What is this?** Yamaha A-U671 Stereo Amplifier with USB DAC Function by yamaha
- **How much does it cost?** $U2917 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/22622857-yamaha-a-u671-stereo-amplifier-with-usb-dac-function)

## Best For

- yamaha enthusiasts

## Why This Product

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

## Key Features

- • **Power Meets Precision:** Delivering 70 W + 70 W at 6 ohms, this amplifier ensures your music is heard loud and clear.
- • **Versatile Connectivity:** Equipped with five-way speaker binding posts and analog audio inputs for seamless integration.
- • **Sleek and Compact Design:** With dimensions of 12.38 x 13.5 x 2.75 inches, it fits perfectly into any modern setup.
- • **Cutting-Edge DAC Technology:** Utilizes the renowned ESS SABRE32 DAC for a rich, immersive listening experience.
- • **Unleash High-Fidelity Sound:** Experience DSD 5.6 MHz and PCM 384 kHz playback for unparalleled audio clarity.

## Overview

The Yamaha A-U671 Stereo Amplifier combines high-grade USB DAC functionality with powerful audio output, featuring DSD 5.6 MHz and PCM 384 kHz playback. Its compact design and versatile connectivity options make it an essential addition for audiophiles seeking superior sound quality.

## Description

High-resolution audio with original Yamaha design. With USB DAC functionality, enjoy DSD 5.6 MHz and embrace a new world of digital audio playback.

Review: Great minimalist software and hardware UI - high quality audio for pc/mac.. - Great amp/headphone amp/DAC for pc or mac audio. No issues driving several sets of bookshelf speakers including a pair of Legacy Audio Studios with a 4ohm nominal rating. No significant heat, protection circuitry untriggered. Interestingly for an amp, the housing isn't ventilated. Unlike class A or AB amps, class D amps are more efficient which results in cooler, more energy efficient operation. Regardless, another class D amp I own is ventilated. It's almost ten years old which I suppose suggests that class D amps continue to evolve and have become even more efficient. . Wide format support with the Yamaha HiFi USB driver up to and including DSD. Very clean playback across the audio spectrum. No clicks, pops, hiss or hum. I have it connected to a UPS with voltage regulation and an emi/rfi filter which may help. For the best sound quality according to Yamaha, there's an option called Pure Direct. They say this improves audio quality by bypassing certain circuitry. When in this mode, the bass and treble controls are bypassed along with the subwoofer. I've tried it and noticed no difference when compared to playback without it (treble and bass set flat, sub disconnected) but it's there and available to use. Perhaps most importantly, the driver for pc/mac playback is stable and well designed. Once the software is installed, it's a set and forget exprerience. Post installation, no issues. In my experience, Yamaha's software is a benchmark for what this type of software should be. For Foobar users, Yamaha thoughtfully includes configuration info in their download site. Lastly, you'll need to thoroughly review Windows Sound options to make sure you're fully utilizing the capability of this DAC/ amp. Pros: Very clean and natural sounding playback. Powerful class D amp. Capable of driving a wide range of bookshelf speakers to realistic volumes. Even with a pair of speakers nominally rated at 4ohms, the amp never got hot. Rock solid, 'set and forget' firmware/software. Benchmark software interface in my experience. Bass and treble control knobs! Not common these days. Having to dig into a menu system to make quick tweaks is annoying. Size. Not as small as some mini-amps but small enough to allow for more placement options than a full size component. A subwoofer pre-out. USB input for a clean digital transfer from a PC or Mac. Minimalist remote. Cons: Limited connection possibilities. No coax, toslink, wifi, bluetooth or HDMI inputs - only USB and RCA inputs. This is first and foremost a pc/mac playback device. Pricey relative to some full size amps with more features, power and connection options.
Review: Good amplifier with very nice DAC built inside - Good amplifier with very nice DAC built inside. However, the noise is a little bit high when paired with normal sensitive speakers. If you place your speakers within 50cm, you can sure hear it. This noise presents as long as the power is on, it does not disappear even if you turn the volume all the way down to zero. So I suppose it is the noise from the final Class-D amp stage.

## Features

- DSD 5.6 MHz and PCM 384 kHz playback with high-grade USB DAC functionality
- Utilizes the ESS SABRE32 DAC (ES9010K2M)
- Five-way speaker binding posts (stereo)
- Analog audio input (stereo) and a single subwoofer output
- 70 W + 70 W (6 ohms, 1 kHz, 10% THD)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B017CFENDA |
| Batteries | 2 AAA batteries required. (included) |
| Brand | Yamaha |
| Customer Reviews | 3.7 3.7 out of 5 stars (14) |
| Date First Available | November 6, 2015 |
| Global Trade Identification Number | 00027108953212 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7.3 pounds |
| Item dimensions L x W x H | 12.38 x 13.5 x 2.75 inches |
| Item model number | A-U671 |
| Manufacturer | Yamaha Electronics |
| Material | Metal |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Output Power | 70 Watts |
| Product Dimensions | 12.38 x 13.5 x 2.75 inches |
| UPC | 027108953212 |

## Product Details

- **Brand:** Yamaha
- **Item dimensions L x W x H:** 12.38 x 13.5 x 2.75 inches
- **Manufacturer:** Yamaha Electronics
- **Mounting Type:** Surface Mount
- **Number of Channels:** 2

## Images

![Yamaha A-U671 Stereo Amplifier with USB DAC Function - Image 1](https://m.media-amazon.com/images/I/51BlOQfXf+L.jpg)
![Yamaha A-U671 Stereo Amplifier with USB DAC Function - Image 2](https://m.media-amazon.com/images/I/51B3gWeFCmL.jpg)
![Yamaha A-U671 Stereo Amplifier with USB DAC Function - Image 3](https://m.media-amazon.com/images/I/51vTPjlcQgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great minimalist software and hardware UI - high quality audio for pc/mac..
*by D***N on April 24, 2017*

Great amp/headphone amp/DAC for pc or mac audio. No issues driving several sets of bookshelf speakers including a pair of Legacy Audio Studios with a 4ohm nominal rating. No significant heat, protection circuitry untriggered. Interestingly for an amp, the housing isn't ventilated. Unlike class A or AB amps, class D amps are more efficient which results in cooler, more energy efficient operation. Regardless, another class D amp I own is ventilated. It's almost ten years old which I suppose suggests that class D amps continue to evolve and have become even more efficient. . Wide format support with the Yamaha HiFi USB driver up to and including DSD. Very clean playback across the audio spectrum. No clicks, pops, hiss or hum. I have it connected to a UPS with voltage regulation and an emi/rfi filter which may help. For the best sound quality according to Yamaha, there's an option called Pure Direct. They say this improves audio quality by bypassing certain circuitry. When in this mode, the bass and treble controls are bypassed along with the subwoofer. I've tried it and noticed no difference when compared to playback without it (treble and bass set flat, sub disconnected) but it's there and available to use. Perhaps most importantly, the driver for pc/mac playback is stable and well designed. Once the software is installed, it's a set and forget exprerience. Post installation, no issues. In my experience, Yamaha's software is a benchmark for what this type of software should be. For Foobar users, Yamaha thoughtfully includes configuration info in their download site. Lastly, you'll need to thoroughly review Windows Sound options to make sure you're fully utilizing the capability of this DAC/ amp. Pros: Very clean and natural sounding playback. Powerful class D amp. Capable of driving a wide range of bookshelf speakers to realistic volumes. Even with a pair of speakers nominally rated at 4ohms, the amp never got hot. Rock solid, 'set and forget' firmware/software. Benchmark software interface in my experience. Bass and treble control knobs! Not common these days. Having to dig into a menu system to make quick tweaks is annoying. Size. Not as small as some mini-amps but small enough to allow for more placement options than a full size component. A subwoofer pre-out. USB input for a clean digital transfer from a PC or Mac. Minimalist remote. Cons: Limited connection possibilities. No coax, toslink, wifi, bluetooth or HDMI inputs - only USB and RCA inputs. This is first and foremost a pc/mac playback device. Pricey relative to some full size amps with more features, power and connection options.

### ⭐⭐⭐⭐ Good amplifier with very nice DAC built inside
*by J***N on May 13, 2018*

Good amplifier with very nice DAC built inside. However, the noise is a little bit high when paired with normal sensitive speakers. If you place your speakers within 50cm, you can sure hear it. This noise presents as long as the power is on, it does not disappear even if you turn the volume all the way down to zero. So I suppose it is the noise from the final Class-D amp stage.

### ⭐⭐ Great, except for the headphones
*by E***P on February 7, 2018*

This amp has a lot going for it — it's simple, has all the controls you typically need, a subwoofer output, remote, small footprint, and just two inputs. For a minimalist like me, it's perfect. Unfortunately, it has a constant buzzing noise from the headphone output. This was on the original and replacement unit, so I can only assume it's a flaw in the product. I'm not paying $500 for an amp, that's advertised on Yamaha's site as a "high-quality headphone amplifier" yet has a cruddy headphone buzz. Returning.

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-22*