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Bellari HA540 Pure Class A Stereo Headphone Amplifier

by Bellari
4.2 out of 5 stars 23 customer reviews

List Price: $299.00
Price: $249.00 & FREE Shipping. Details
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  • Low and High Inputs
  • 12AX7 tube output
  • Drives headphones from 16-2k Ohms
  • Zero feedback Class-A, all tube headphone amplifier
  • Extremely detailed, rich, bold sound
7 new from $248.79 2 used from $139.00

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$249.00 & FREE Shipping. Details Only 4 left in stock. Sold by Turntable Lab and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Bellari  HA540 Pure Class A Stereo Headphone Amplifier
  • +
  • Mullard 12AX7 Preamp Tube
  • +
  • Tungsol 12AX7 Tube
Total price: $287.48
Buy the selected items together

Technical Details

  • The Bellari HA540 is a audiophile grade headphone amplifier. The all class A signal path ensures smooth clean analog audio. The 0 feedback design means smooth natural analog response. It features 2 input paths and high gain for MP3 players, ipod, etc and a low gain path from audio selectors, mixers, satellite receivers, etc.. It also features direct into the tube grid coupling for no loss or distortion. The unit is included with a universal powersupply for use most anywhere in the world.

Product Description

Bellari HA540 Tube Headphone Amp The Bellari HA540 was built for those of us who have lusted after tube headphone amplifiers only to be dismayed at the enormous expense. The HA540 is an honest to goodness zero feedback Class-A, all tube headphone amplifier in a very compact chassis. How good can it be at this price? Excellent, actually. Just like Bellari's outstanding phono preamps, the HA540 offers an extremely detailed, rich, bold sound with a surprisingly reasonable price. The HA540 is a very flexible design with a lot of great features that should be standard on every headphone amp. The first great feature is the visible 12AX7 tube. This gorgeous, capable amp drives headphones from 16-2k Ohms and offers both 1/4" and 1/8" outputs. Input selection is also quite extensive, with both an RCA and a Mini-Jack input (selectable). The HA540 is also designed to extract maximum performance from any source with two types of inputs to match any source. We love the sound from this all-tube headphone amp, and we know you will, too. Two Types of Inputs To ensure the best sound possible from any source, the HA540 has two different input types, Low and High. High is for devices with robust output stages like full-size CD players, tape outputs from a preamp or receiver etc. Low is a special input which offers greater gain for portable devices or any device that doesn't have a robust output stage. Why is this necessary? Imagine the HA540 sitting on your desk at work. The High input is connected to your high-quality USB DAC and the Low input is connected to your iPod, XM Radio tuner or portable radio. The two types of inputs can be selected from a top panel selector. *NOTE: There are two Low connection options, Mini-Jack and RCA. This allows either a Mini to Mini or a Mini to RCA cable to be used. These are either/or inputs, please don't use them simultaneously. All Bellari products are manufactured in the USA

Product Details

  • Shipping Weight: 2.5 pounds (View shipping rates and policies)
  • ASIN: B004FI6AKW
  • Item model number: HA540
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (23 customer reviews)
  • Amazon Best Sellers Rank: #140,139 in Electronics (See Top 100 in Electronics)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: October 9, 2010

Customer Reviews

Top Customer Reviews

Though I'm the satisfied owner of a Fiio E9 headphone amp, I own Ultrasone PRO750 headphones which are much like Grados only with more robust bass. The Ultrasones sound dry on some recordings, so when I found the Bellari HA540 Class A tube headphone amp at a steep discount, I purchased it. Since my integrated amp has two tape loops, I can connect the Fiio and the Bellari simultaneously.

The Bellari is manufactured in the USA by a division of Rolls. Readers might be familiar with Rolls through their HA43PRO headphone amp, which is often used to connect to the RCA outs of a TV. The Bellari uses one tube, a 12AX7, which is very common and easily sourced. Rather than use the stock tube, I purchased a Mullard reissue.

The Bellari is a Class A amp, but is barely warm to the touch. It's an OTL design: there's no output transformer. In practical terms, that means your headphones are providing the load on the tube. Headphones with too low an impedance could overdrive the amp. A headphone amp is the perfect application for an OTL design because headphones rarely have impedances as low as loudspeakers, which are mostly in the 4 to 8 ohm range.

The lowest impedance headphones I own are the Denon AH-D2000 at 25 Ohms, and the Bellari can handle it--but that's about as low an impedance as I'd want. The Ultrasone PRO 750 isn't very efficient, but the Bellari has lots of gain--it can drive the Ultrasones into pain territory without trying. It has two gain settings: a low setting for iPods, and a high setting for typical line out devices like CD players or the tape loop of a preamp, integrated amp, or receiver. The low and high designations refer to the input voltage, iPods having lower output than CD players or tape loops.
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1 Comment 38 of 40 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Either you get or don't get the value of tube amplification. I'll leave that debate for others.

Headphone amps really do 'pull' the sound out of a pod, and I've used and enjoyed a battery-powered 'Total Airhead' for many years now. Unilke battery devices, tubes need more juice, so this is an 'at home' gizmo, although it is small and quite portable for road warriors.

If you are ripping your music in lossless formats for use on I-Pods, I-pads or other portable devices, and enjoy a good pair of headphones, this little box is worthy of your attention.

When you break audio out of a pad/pod through the line-out dock connector, this will drive your headphones with gobs of headroom to spare, and deliver a pretty amazing listening experience. Sounds is like you had mud in your ears without it.

I use this with both lower-high-end Grado's and Dennon's and am delighted with the transparency, image integrity and overall 'musicality' of the experience.

I use these in my 'reading spot', a comfortable chair with strong full-spectrum light and can really get 'lost' in the splendor of the sound.

I've yet to play with swapping out tubes (yes, you can play around with a variety of Ax7 options to 'tune' your own sound) but can happily report that this amp gives a listening experience far beyond the fiscal investment.

The gain is quite high, and the volume control could have been trimmed differently (I never, ever move it past 1/4) for more precise adjustment, but that's nit-picking. This, a pod and any good headphone set will give you sonic satisfaction.

I've owned other audio devices from Rolls (Bellari's alter-ego) and had good service from them, and expect the same from this.
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Comment 16 of 17 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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By TomVette on February 3, 2013
I purchased this headphone amp to support listening when speakers simply don't allow privacy.

The headphone amp was excellent out of the box. The sound was punchy with extended bass and a smooth but detailed sound.

I later substituted a new old stock Tung Sol tube. Boy, the highs became more extended, and the sound more liquid. Finally I substituted a regulated power supply with greater than an ampere of current.

This hybrid headphone amp is quite good at any price and excellent for the money. Highly recommended.
1 Comment 5 of 5 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Verified Purchase
I own a pair of Denon AH-D5000 headphones Denon AH-D5000 Reference Headphones. My primary use of these headphones is with my digital Yamaha Clavinova CLP 380 piano. On a high-quality Marantz receiver, I could easily get the volume level very loud on my headphones so that no further amplification was needed. However, at the very highest volume on my piano, these headphones weren't very loud. So I realized I would need some type of amplification for the headphones. Initially, I purchased a Pro-Ject Head Box II headphone amplifier Pro-Ject: Head Box II Headphone Amplifier - Silver. Unfortunately, even with the volume on both the piano and headphone amplifier turned all the way up there wasn't much increase in overall volume. I considered buying a pre-amp at this point, and then I came across reviews of the Bellari HA540 Headphone Amp. I decided to return the Pro-Ject amplifier and purchased the Bellari HA540 Headphone Amp instead. Voila, using the low gain input on the headphone amplifier I was able to achieve an extremely loud volume at half way on both the piano and headphone amplifier. Also of note is the fact that connecting the Bellari HA 540 Headphone Amp to the Marantz receiver I was able to achieve blaringly loud volumes.

As others have noted, changing out the 12AX7 tube is quite easy and well worth it. The Ruby tube it comes with is ok, however I found the Mullard Reissue to be the best, with a Tungsol tube coming in 2nd.
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