Name: BasX A1 Monoblock Power Amplifier
Brand: Emotiva Audio Corporation
SKU: AMP-BASX-MONO-A1
Price: 299.0 USD
Availability: OutOfStock

A black monoblock power amplifier with the label 'BasX A1' on the front.

BasX A1 Monoblock Power Amplifier

Discontinued

The BasX A1 is a monoblock amplifier ideal for driving dedicated power to your most important speakers. Use the A1 as the foundation for a high-performance stereo system or to give every speaker in your system the ultimate assurance of pure channel isolation.

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Photo of the back of the BasX A1 monoblock amplifier showing various inputs and controls

Product Overview

The BasX A1 is a monoblock power amplifier that delivers 200 watts into 8 Ohms and 325 watts into 4 Ohms, with a rated THD+N of < 0.02%, and an A-weighted S/N ratio of 112 dB. The BasX A1 features a heavy-duty linear power supply, high-quality Class A/B amplification, transparent fault protection, and a trigger input and output. A high quality industry standard unbalanced RCA input enables the BasX A1 to be used with almost any preamp or processor and audiophile grade five way speaker terminals accept banana plugs, spade lugs, or bare wire. These features combine to enable the BasX A1 to deliver true audiophile performance and sound quality at an amazingly affordable price.

In addition to the features it shares with our other BasX power amplifiers, as a true monoblock the BasX A1 also offers several other benefits that will be appreciated by dedicated audiophiles. Monoblocks offer the ultimate assurance that there will be no unwanted interaction between channels. The audio signal for each channel is handled by a separate amplifier, powered by its own heavy duty power supply, housed in its own separate chassis. This also gives you the option of minimizing the length of your speaker cables by locating each amplifier close to the speaker it powers.

Simply choose as many BasX A1 monoblocks as you need today… or use them for your most critical channels today and upgrade your other channels later. And, of course, a BasX A1 is also a great way to upgrade your center channel to match your main stereo pair.

Product Features

Sound Quality First

Designed first and foremost to sound great in all types of audio systems with all types of music. Great sounding Class A/B output stage ensures smooth, detailed sound and incredibly natural imaging, without a trace of harshness or strain.

Low noise, wide bandwidth design, and a highly optimized input stage, lets you hear everything your high definition sources have to offer.

Totally stable with real world speakers in real systems; not just on a test bench.

True monoblock design delivers absolute isolation between channels.

Solid Engineering And Quality Construction

A heavy duty linear power supply with an oversized toroidal power transformer delivers plenty of current to drive even difficult speakers. Top quality parts and construction throughout deliver years of reliable trouble-free service. Heavy steel chassis with milled aluminum faceplate offers strength and rugged good looks. Double sided FR4 circuit boards, with plated-through holes, help optimize signal paths and minimize the need for point-to-point wiring.

Flexible Signal Connections and Power Options

Unbalanced input via industry standard RCA connector accepts all standard unbalanced interconnects.

Heavy duty insulated five-way speaker binding posts allow you to use a wide range of speaker cables with bare wires, lugs, or banana plugs. Remote trigger input and output allow the BasX A1 to control and be controlled by other trigger-enabled equipment.

The BasX A1 is designed to operate on either 115 VAC or 230 VAC at 50/60 Hz and will automatically detect and configure itself for the proper line voltage.

Stylish New Look

Our redesigned front panel gives the new BasX A1 a sleek modern aesthetic that fits well with virtually any room décor.

Strong Yet Silent System Protection

Audiophile-grade fault protection is entirely transparent under normal listening conditions, yet protects the amp and your other equipment from virtually all common faults. Full three-year warranty ensures that you’ll be able to enjoy your BasX power amplifier for years to come.

CIRCUIT TOPOLOGY

AUDIO SPECIFICATIONS

INPUT & OUTPUT CONNECTIONS

TRIGGER & POWER REQUIREMENTS

CONTROLS & INDICATORS

PROTECTION

MECHANICAL

Complete Your Audio Solution

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FAQ

The BasX A1 delivers 200 watts RMS into 8 ohms and 325 watts RMS into 4 ohms, giving you clean, dynamic power for even demanding speakers.

The A1 is perfect for powering a single speaker in a stereo or home theater system. Use one for each of your mains, dedicate one to your center channel for crystal-clear dialogue, or build a full monoblock array for uncompromised performance.

Yes. Just add more A1 monoblocks as your system grows. Each amp powers one speaker, so you can scale your system one channel at a time.

Each A1 has its own chassis, linear power supply, and output stage. This complete isolation between channels delivers pristine separation, lifelike imaging, and the option to place each amp close to the speaker it drives.

The A1 is engineered with premium components, a rugged steel chassis, and a heavy-duty linear power supply for long-term durability. It’s backed by Emotiva’s 3-year warranty and supported by our U.S.-based team in Franklin, Tennessee.

Product Reviews

I just acquired 2 Basx A1 monoblocks. I have ordered a number of electronics from Emotiva including XPA DR 2 amplifier over the years. I can tell you this - everything I have ever ordered from Emotiva arrives extremely well packaged / double boxed. I jokingly said that you could throw their stuff out of an airplane and it wouldn't be damaged REALLY - that is how well they package their equipment. The Basx A1 amps immediately made a difference driving my Klipsch RP-8000F II fronts. I was driving them using my Yamaha RX-A3080 but was stressing that AVR out a bit much because it could not provide the power for the bass the Klipsch were capable of. Hooked up the A1's and - BOOM - there was the bass I knew they could produce. Now, I may not have an excuse to buy subwoofers. By-the-way, I did have the XPA-Differential 2 hooked up to the RP-8000F's. I did not need that kind of power for those Klipsch. It was like putting a Jet engine in a Volkswagon. Way overkill, so I sold that amp to a friend and bought the Basx A1's. I MUST also mention that these amps run extremely cool - even the XPA DR2 never (barely) got warm. The Mono A1's drive the Klipsch RP-8000F's to any level without breaking a temperature sweat. As far as I'm concerned Emotiva provides McIntosh quality to the working man at a price they can afford. OH! OH! - Had an issue on the purchase and Emo's customer service was EXCEPTIONAL and IMMEDIATE = shout out to Dante Stalteri and Kayla B. !!!!

Great amps, even better pricing!

Purchased the BasX A2+ to drive my Wharfedale Super Linton's using my vintage Pioneer SX-1080 as a pre-amp. Sound is wonderful, full, and powerful. My Pioneer could drive the Linton's very nicely but only about 11 o'clock on the volume dial, before it would go into protection mode. The EMotiva amp fixed this issue completely.

A great product and superb customer service.

Such a great company.
I just love the bang for the buck factor.
Thank you Emotiva!

Love your amplifiers there awesome

Love your amplifiers there awesome sound stage sound excellent. Unbeatable prices and support. Best wishes this coming year for Emotiva keep that vision for superior power and sound for the costumers. God bless you and your families in Emotiva. A Big kiss to Emotiva ,peace and love from my:heart:️. :pray::pray::pray::pray::pray:

Excellent

I already had 2 XPA HC-1s driving my main Martin Logan electrostats, and was very impressed with their performance. I added the BasX mono block to drive the matching Martin Logan electrostatic center channel, and could not be happier. Tight, articulate, and drives the speaker with ease. A worthwhile upgrade.

The A1's totally woke my Maggie LRS+'s up.

I have had the amps for a few weeks. Super busy with work. Had a proper go with them last night.

System: Wiim Ultra to Fiio Warmer Dac to the A1's to the LRS' with two REL T5x subs. I've been messing around with class A amps for a few months. Tube and some Chinese clones. Some of them were very good. Problem is they just can't deal with how inefficient Magnepan's are.

The power is smooth and the control they present to the little Maggies is incredible. Sound Stage is really really good. I am in love with how dark they seem. At this point I am very pleased with my purchase.

Excellent sound, fit and price

I was stunned when these went on sale and immediately ordered a pair for my system. They replaced a solid, but aged G. A. S. Son of Ampzilla. I’m using a WiiM Ultra as a front end/source and driving Goldenear BRX’s. This is the best match of equipment I’ve ever had. Music at any volume is full and images well. With the 12 volt trigger I’m able to easily control the entire system from my phone or iPad. I am extremely pleased with these amps.

Lots of clean power.

I'm using two of these along with PT1 tuner and CD1 player. Delivers clean and clear sound with no distortion.

Amazing 300 dollar mono amp

Upgraded from emotiva all in one stereo amp dac preamp to drive my emotiva towers. Speakers are happy now, sound is full and clean. Definitely consider 3 of these to run your front 3 in a surround sound system. Enjoy

WHAT I WAS LOOKING FOR

The Basx A1 was exactly what I needed to bring my RC64C iiii center channel to life. Voices come to life with much more clarity and depth. Also great headroom.

Awesome Amp

Finally, an amp that will drive my Magnapan LRS panels. Had it running for only two days it the panels sound amazing. Very clean power.

Downgrade Fears Forgotten

My almost 18 year-old Gen 1 XPA-5 was starting to have technical issues and I decided it was time to replace it. I considered a new XPA-5, but I was only driving 4 overheads and my center on my Gen 1 (long story, my setup changed drastically since first buying my XPA-5). After exploring my options (including other brands), I decided to go with an A1 for my center and an A4 to drive my overheads.

I feared this would be a downgrade. But upon firing up the new amps and initially setting the levels, a necessary step as the XPA-5 Gen 1 was 32 db gain, I popped on a movie to test the new gear. I was speechless at how much more cohesive the overall sound was with the A1/A4 combo matched with my Emotiva RPA-2 (Emotiva's 2008'ish Reference stereo amp) and an A300 driving my surrounds. And what a match it is! The XPA-5 apparently was much more dynamic (as it's reputation deems), and I am realizing now that it was overpowering the rest of my system, particularly the center channel. I constantly was adjusting the volume up and down with the Gen 1 for as long as I can remember. Now everything is much more balanced, and because of that evcerything sounds cleaner, and dialogue is more intelligible.

Throughout this process I was half expecting that I'd be sending the new amps back and end up getting another XPA-5 after all was said is done. No chance on that now that I've gotten a taste of the new gear. I'm extremely happy with my purchase decision!

BasX A1

Love them. 2 BasX A1 mono’s to power my Airmotiv XT2’s

Awesome!

I purchased the BasX A1 Monoblock Power Amplifiers. Paired them with my seven-year-old 2. 5-way, 6 ohms impedance speakers. The speakers were previously powered by a 275 wpc (8 ohms), 400 wpc (4 ohms), 2 channel power amplifier. The sound quality of the speakers with BasX A1 Monoblock power was awakened and they are now in BEAST mode! So much so that, I was considering upgrading to next level speakers but put that on pause. The construction, aesthetics, and PERFORMANCE of the BasX A1 Monoblocks are exceptional. I enjoy music at much lower volumes and use my subwoofer sparingly. The BasX A1 Monoblocks are Awesome!

Anthony

Improved Center Channel Performance

The Basx is powering my center channel through the preout on my Denon AVR. Improved voice clarity and overall dynamics for the most important channel in a 5. 1 system. Especially with Bowers and Wilkens power
hungry speakers. Highly recommended!

Every Listening Session Once Again Pure Happiness!

About 15 years ago, my late 1980s B&K ST-140 stereo amplifier went weak in the left channel. As my wife & I were living on a modest income while raising 2 hungry, growing young boys, we couldn’t realistically & responsibly afford to replace that B&K with a comparable amplifier. We chose to “simplify” with a mid-range Japanese made receiver that we purchased as an open box demo at Circuit City for half retail price. With great sadness, I had to sideline my Sumo Athena preamp (which has a Direct mode where the signal basically bypasses all electronics in the preamp to send the signal “directly” to the volume control potentiometer with as little distortion & noise as possible—very similar to the old passive Mod Squad Line Drive). While this receiver performed 100% reliably for 15 years, our music lost its detailed, wonderfully musical flavor. I “suffered” (ha ha) quietly for 15 years with the consolation that we made the right choice to be frugal for the sake of our family & family budget’s health. However, I noticed that I no longer put on music for the mere sake of sitting to listen with intense, eager focus; I missed those countless listening sessions. I am very humbly thankful that my wife and I now have the budget to be able to afford the replacement of the old B&K ST-140 that I loved so much. After long “research” through Randy (The Cheap Audio Man), Steve Guttenberg (Audiophiliac), Andrew Robinson, and other good YouTube audiophile channels as well as continual internet reviews research, I basically landed on the Emotiva A1 Monoblock amps. I simply could not possibly be happier! I am once again feeling the urge to cry, laugh, & smile until my face hurts when I listen to music! EVERY bit of music is once again an event whether I am intentionally listening with I distracted focus or listening casually as I cook, read, entertain guests, or move about my home. My old Sumo preamp (bought in 1992 as a half price demo) is as transparent and “perfect” as ever. My 35 year old California Audio Labs Icon CD player suits my ear perfectly. I know they are not for everyone, but I love my 35+ year old Klipsch KG-4 speakers. Thank you, Emotiva, for once again turning every listening session into pure happiness! I appreciate your commitment to making affordable audiophile equipment that we audiophiles with modest incomes can enjoy!

Mono Block Mess

Basx1 mono block amps did not perform even close to the level i had hope. No sound stage or focused imagery at all. Just got the ‘wall of sound’ with vocals jumping out at the sides of my listening area. I already have one of their stereo amps and it wasn’t even close. Big miss for me and sent them back to Emotiva. Disappointed to say the least

Center channel

My XPA 9 CHANNEL amplifier would go into protection mode while play movies with 120 dB peaks. The center channel card would light up the red LED. Adding the Bass X mono block for center channel duties reduced the stress on the XPA,s power supply to the point my system has never sounded so CLEAN and LOUD! For the first time in months l can play Ready player One,s race scene with the XPA NOT going into protection. The BassX mono block doesn't break a sweat. Actually it stays cool to the touch, while my XPA and processor get hot, have pancake fans installed on top to keep them cool. Who KNEW?

BasX A1 Monoblocks

The BasX A1s are making my Klipsch RF-82 II sound Fantastic. Had a great experience with this order from Emotiva shipping was fast and product was packaged very well. Cant say enough good things about this order.

Impressive Performance and Service

I bought this to power my Bowers & Wilkins center channel (HTM71s3) after having experienced poor performance from my B&W 702s2 towers while driving them with a Denon Receiver (AVR x3800H). The BasX 200 watt monoblock hit the sweet spot, especially when listening at higher levels. No distortion or noise and the impact of having that power on tap was impressive. To be honest, after finding Emotiva online, I quickly found a positive review froom Andrew Robinson which helped me make the decision. I was also pleased with how quickly Emotiva processed my order and received the amplifier the very next day. I highly recommend the BasX A1 and look forward to exploring more products from Emotiva.

Great audiophile quality Amp

I'm using a pair of these to drive a pair of Vandersteen 3 speakers. They are so power hungry that a Marantz Sr8400 w 135 Watts per channel wasn't sounding full.
These speakers sound 10x better with 300 watts per channel.
THERE IS NO HUM. Some have said that idle they hear a hum, if they do it is their pre-amp, as I put my ear on the tweeter and heard NO NOISE !
Great product ^ great price. BTW the 12v trigger cables were included making it fit into my system seamlessly. A+ all the way around.

You deliver speakers and not the mono blocks I ordered.

WOW!

Been living with a pair of these for a few weeks now and I have to say that these are the best sounding amps I have ever owned. I've always been a vintage guy and love that warm sound ot gives me, but, my music has never sounded more detailed and clear. Even my old Cerwin Vegas that I have a love hate relationship with sound completely different and new. 200 watts of clean power! This is exactly what I've been looking for. I have them matched to a PT1 preamp that is also great. Never going to look back. Thanks for a great experience EMOTIVA!

Product Overview