Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
All
SA3
reviews
Manufacturer details
- Power Output: 45W (8Ω, 2 channels), 90W (8Ω, 1 channel bridged), 90W (4Ω, 2 channels), 180W (4Ω, 1 channel bridged)
- Audio Inputs: 5x RCA (Input sensitivity 200mV), 1x S/PDIF coaxial, 1x Toslink optical, 1x Bluetooth (IOTAVX Bluetooth adapter required), 1x Phono (MM) (Input sensitivity 2.5mV)
- THD+N: ≤0.005% (80% power, 1 kHz)
- Signal-to-Noise Ratio: >105dB (32W, A-weighted)
- Frequency Response (+/-3dB): 10Hz - 100kHz
- Power Supply: 115VAC or 230VAC, @ 50/60Hz
- Standby Power Consumption: <0.5W
- Dimensions (WxHxD): 435 x 70 x 240 mm
- Weight: 6.5 kg
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
Select products
IOTAVX SA3
- Positioning: A compact stereo amplifier designed for wired audio setups for smaller spaces.
- Description: Offers Class AB amplification with a short signal path and integrated digital-to-analog conversion for clear performance, which makes it different from the more power-demanding models in the lineup. Compared to the AVXP and SA40 models, it meets basic connectivity needs at a lower cost, suiting users with moderate budgets and modest room sizes.
IOTAVX AVXP 3-230
- Positioning: A three‐channel surround amplifier intended for home theater environments.
- Description: Delivers 230W per channel with substantial buffering through a high-rated capacitor and ring-core transformer for dynamic performance, a technical edge over simpler stereo models. Compared to the SA3 and full system bundles, it offers dedicated front-channel support and robust power management for users needing enhanced home cinema functionality.
IOTAVX SA40 + PA40 Set
- Positioning: A stereo amplifier and power amplifier set aimed at more demanding listening rooms.
- Description: Pairs a refined preamp with a dedicated power section to provide balanced tonal control and extended connectivity options, setting it apart from basic models. Compared to the SA3 and standalone endstages, it delivers improved build refinement and technical versatility.
IOTAVX AVX17 + 2 x AVXP1 + 14 x AperionAudio XLR Audio Kabel Mono 1m
- Positioning: A high-end surround system bundle tailored for comprehensive home audio installations.
- Description: Integrates a preamplifier with dedicated power modules and high-quality cables, featuring advanced signal handling and low noise design that distinguishes it from simpler setups. Compared to the SA3, AVXP 3-230, and SA40 sets, it offers superior technical sophistication and connectivity options.
Our take on the brand
Look inside the brand
Our interview with the brand
What are two key technological innovations or strong opinions that differ you from other brands?
I wouldn't break it down to two key technologies, but rather to a general philosophy. With every product, we strive to optimize it for its intended use and omit unnecessary and redundant specifications. This makes the products cheaper, saves us licensing costs, and makes them less prone to errors. Take our AVX17 preamplifier as an example, which has no network, no streaming, no radio, and no DSP simulations. These are all features that are already present in another device or are never used. In return, you get good sound and picture and parametric EQs per channel, so that every customer can adjust the device to best suit themselves and their room. And the preamplifier costs "only" 1799€ and not several thousand euros.
What's your approach to customer support?
We try to provide support in the same way that we would expect from other companies. (When we shop as a private individual.) Always try to answer every email as quickly as possible (usually max 24 hours) on a business day. We are also always easy to reach by phone, and if not, we always try to call you back as quickly as possible.
First, contact the dealer/distributor. If the dealer can't help directly, we'll help either through the dealer or by contacting the customer directly.
From what we've heard from many customers, we're different to others in that we try to offer very quick and straightforward solutions. Even if the warranty has expired, anyone can contact us, and we've always found a customer-oriented solution.
What are your favorite tracks for showcasing the strength of your products?
- Keep the Wolves Away - Uncle Lucius
- The Curse - Agnes Obel
- Bungee Jump - Captain Hook
We also have an official IOTAVX playlist on Qobuz.
What other products pair best with yours?
Generally, our products can be paired with virtually any product thanks to their neutral/natural sound. We use speakers from AperionAudio (US) and BuchardtAudio (Denmark) at trade fairs and for demonstrations in our showroom.
Used
IOTAVX
What if you spend more?
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Our summary
Product Strengths
- Open, neutral, and extremely rewarding sound quality
- Excellent phono stage and headphone amplifier
- Beautifully made with a solid build quality
- Transparent sound allows the listener to shape the system's character
- Integrated amp can be partnered to double down on transparency or to shape the system you want
Product Considerations
- Remote control can be a bit difficult to use in low light
- Offers less functionality compared to some rivals at the same price point
- Some reviewers found certain performances to be slightly cool
- Volume adjustments with the remote control could be more sophisticated
Comparisons (according to reviewers)
- The MOON 250i v2 sounds more open than the MOON 600i v2
- The MOON 250i V2 is not as tactile in the treble region, when compared to Naim Nait XS 3
- The MOON 250i V2 has more bite in the treble region, when compared to Exposure 3510
- The Pass Labs amplifier has a more transparent—involving sound, when compared to the MOON 250i V2
Takeaway: The MOON 250i v2 is a well-made amplifier that delivers transparent sound quality suitable for various audio systems and listening preferences. It is a great choice for those looking for quality audio reproduction without needing all the latest digital features.
Video review
Our take on the brand
Product Strengths
- Builds upon the foundation of its predecessor, the SV-500, by adding HDMI and Bluetooth connectivity
- Features a hybrid vacuum tube and solid-state design, combining tube warmth with solid-state power
- Integrated DAC supports digital input signals, and a built-in Bluetooth module supports modern codecs like aptX and AAC
- Offers versatility by functioning as a standalone preamplifier or DAC, in addition to being an integrated amplifier
Product Considerations
- The omission of a phono pre-amplifier is a mistake
- Absence of a subwoofer output feels like another lost opportunity
- The trademark Vincent porthole that allows one to see inside the amplifier and the glowing tubes is also not part of the package
Comparisons (according to reviewers)
- Vs Vincent Audio SV-737: The SV-500 MK may not offer the power of the SV-737, but 50 watts might be enough for a lot high-sensitivity bookshelf and floor standing loudspeakers
Takeaway: The SV-500 MK is a versatile amplifier with modern features like HDMI and Bluetooth, combined with the classic warmth of tubes. Its hybrid design and multiple functionalities make it worth considering for those seeking a balance of old and new.
Video review
Our take on the brand
Product Strengths
- Delivers a vividly detailed and balanced sound, handling complicated mixes with skill
- Able to extract a lot of information from digital audio files with apparent ease
- A volume lock prevents accidental volume adjustments when the device is in a pocket or bag
- Extensive specification including Bluetooth 5.4 with aptX Lossless compatibility and multiple inputs/outputs for versatile connectivity
Product Considerations
- Some reviewers feel the device is not very pocket-friendly due to its size and sharp edges, making it better suited as a transportable—rather than a truly portable—device
- The gain is set too high, making precise volume control difficult, especially with sensitive IEMs
- Using IEMatch adds output impedance, which can negatively affect the tonal balance and dynamics of some IEMs
- The length of the included USB-C cable is short, making it difficult to position the device on a desk
Comparisons (according to reviewers)
- Compared to the iDSD Diablo 1, the Diablo 2 offers slight sonic improvements and better build quality, but at a higher price
- Compared to the iDSD Signature, the iDSD Signature is considered by some to offer a better result for less money, with a more realistic instrument and vocal timbre, larger soundstage, and customizable features like crossfeed and bass boost
- Compared to the FiiO Q7, the iDSD Diablo 2 has a vivid sound, where the FiiO Q7 has a smooth and wide sound
Takeaway: The iDSD Diablo 2 is a powerful and versatile DAC/amp that enhances headphone listening with its detailed sound and extensive features. It is a good choice for users who want a high-quality audio experience on the go or at their desk.
Video review
Our take on the brand
Anni is our first-ever desktop integrated amplifier. Capable of driving both headphones and compact loudspeakers, Anni benefits from the company's proprietary ULTIMA circuit topology and is perfectly positioned to exploit the full potential of today's high-performance headphones, desktop monitors and high-resolution audio sources.
The new Anni desktop integrated amplifier forms part of the Qutest range and seamlessly complements the resolving abilities of the multi-award-winning Qutest standalone DAC and Huei phono stage. As a system, the Qutest components provide an unrivalled desktop audio solution, offering class-leading digital and analogue technologies for the modern music lover. The company's compact QSS (Qutest Stand System) modular equipment rack provides the perfect support, too.
Anni offers the recently announced dual-feed-forward error-correction circuit topology whether using headphones or compact loudspeakers. Anni's advanced technology allows it to drive any headphone load, error-monitored and compensated amplification at all times.
Benefitting from both 3.5 mm headphone outputs and ¼-inch (6.35 mm) outputs, so two can listen simultaneously, plus 4 mm banana-type loudspeaker outputs, Anni delivers 10 watts of quality ULTIMA amplification, controlled by a fascia-mounted volume control that also doubles as an input selector switch for Anni's two line-level inputs. A two-stage gain control for loudspeakers provides additional flexibility with a wide range of desktop monitors.
Product Strengths
- Joyful sound signature with detailed output
- Can power a wide range of headphones, due to Ultima technology
- Compact design, stacks perfectly with the Qutest and Huei
- Employs trickle-down Ultima technology to allow delivery of enormous peak current outputs
- Solid build quality using CNC-milled aluminum casework and good heat dissipation
- Connectivity options include headphone and speaker outputs
Product Considerations
- No gain switch for the headphone output
- Default gain level a bit high for sensitive IEMs
- More power limitations with speakers than headphones—best for smaller, efficient speakers or nearfield listening
- Runs hot, requiring good ventilation
- The volume control feels a little wobbly and might be difficult to use in a very precise way, and there is some channel imbalance at very low volumes
Comparisons (according to reviewers)
- Qutest/Anni pairing justifies its price premium thanks to a more composed and insightful presentation that offers notably more low-end authority, dynamic punch and tonal richness
- Cyrus ONE HD is plusher, showing that Anni has strong niche appeal
- The iFi xDSD Gryphon has digital inputs and built-in DAC, while Anni can power speakers
Takeaway: The Chord Electronics Anni is a compact and well-built amplifier that delivers a joyful and detailed sound, making it a great addition to a desktop setup for headphone and nearfield speaker listening. Its use of trickle-down Ultima technology ensures high-quality performance in a small package, and its ability to stack with other Chord devices makes it a good choice for those already invested in the ecosystem.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Pleasant, smooth, and relaxed playback
- More insight and tightness in the music
- Much insight into sound and musical structure
- A fresh and modern-looking product with a clean and unfussy exterior, which looks simple yet elegant
- Manages a difficult balancing act superbly—forgiving enough not to emphasise the shortcomings of limited partnering equipment, yet still having the insight and transparency to make the most of more capable signals
Product Considerations
- The front panel display lacks crispness due to the 'frosted' finish
- The speaker terminals don't offer a great deal of space
- The back panel itself shows a certain amount of flexibility, which is a little worrying in terms of longevity
- The power on paper is a little optimistic
Comparisons (according to reviewers)
- Vs Atoll IN50: The Atoll plays a bit bigger, but Arcam gives more insight and tightness
- Vs Cambridge Audio Azur 840A: The Arcam A5's midrange and voice reproduction that the Cambridge just couldn't quite match
Takeaway: The Arcam A5 is a well-rounded performer that plays music enjoyably without getting in the way and is affordable, feature-rich and uncomplicated. It is a great amp for someone looking for a balance of performance and features.
Video review
Our take on the brand
Our Summary
Product Strengths
- Exceptional build quality with a robust aluminum facade
- Delivers 40 watts per channel of clean, musical power in pure Class AB
- Characterized by natural tonal balance, excellent micro-dynamics, and precise imaging
- Offers versatile analog connectivity with 5 RCA inputs, a dedicated MM phono stage, a 3.5mm auxiliary input, and tape output
- Delivers excellent value for money and simple, intuitive operation
Product Considerations
- Lacks digital inputs, which maintains signal purity
- Does not have a headphone output
- Power output may not suit very large rooms
Takeaway: The Rotel A10MKII offers pure analog amplification with musicality and engaging sound, making it great for both new and experienced audiophiles. Its clean sound and quality build make it a compelling choice for enjoying music.
Video review
Our take on the brand
Our Summary
Product Strengths
- Excellent sound quality due to class A type technology
- A fair selection of analogue inputs, including a turntable input
- Stylish design with a perspex front fascia and steel case
- Detailed and engaging sound
- Bluetooth connectivity for wireless streaming from smart devices
Product Considerations
- USB input only offers MP3 playback
- Class A type technology runs at higher temperatures
Takeaway: The X-i50BT is a good amp that can drive speakers well and sounds great. It has many ways to connect devices, making it a useful addition to any audio setup.
Video review
Our take on the brand
Our Summary
Product Strengths
- Very good built-in DAC
- Sounds good at low volumes
- Voices are reproduced closely to much bigger and more expensive amps
- Midrange is well-tuned, especially with Elac speakers
- Elac speakers produce a lot of bass
- Has very good connectivity options
Product Considerations
- A tiny, but audible amount of hiss comes from the tweeter when using the amp
- The Elac app is not flawless yet
Takeaway: The Elac DS-A101-G is a good-looking streaming amplifier with a very good DAC, that sounds great with Elac speakers and has a well-tuned midrange for voice reproduction. Its compact footprint and ease of use make it a good option for those looking to simplify their setup.
Video review
Our take on the brand
Our Summary
Product Strengths
- Warm, rich, and inviting sound with a good midrange focus and fine sound bottom
- Easy to use and connect to the network via Chromecast streaming
- Includes turntable input for MM pickups, plus an analogue line input and a preamp output
Product Considerations
- Not among the most powerful amps and can loosen its grip when the volume is cranked up
- May not shine quite so much upwards in the harmonics
- Doesn't have an Ethernet connector, so it needs to be somewhere with good Wi-Fi coverage
Comparisons (according to reviewers)
- Vs Sonos Amp—the NAD Amp1 sounds better
Takeaway: The NAD Amp1 is easy to use and offers a pleasant listening experience with a warm sound. If you want a small amplifier with Chromecast streaming and turntable input, this could be a great fit.
Video review
Our take on the brand
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