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Bellari HA540 Pure Class A Stereo Headphone Amplifier
|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
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- 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.
Top Customer Reviews
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.Read more ›
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.Read more ›
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.
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.
Most Recent Customer Reviews
I can't understand the reviews here saying the HA540 has weak bass response. I've had one for 3 1/2 years, and I have only good things to say. Read morePublished 1 month ago by Me Again
This is a great headphone amp. I give it only 4 stars, though, because it really needs to come with a better 12AX7 tube to really shine out of the box even though that would drive... Read morePublished 5 months ago by JoeNSA
This is my first tube amp and I'm really impressed with the sound. I play mostly through my mp3 player with 1/8" cable out into DT990Pro 250ohm headphones. Read morePublished on April 21, 2014 by aceofbase
This is an excellent product. My only suggestion would be to replace the tube they provide with an authentic old one for even better, more natural sound.Published on December 29, 2013 by whttgr
I've had this amp for month now, and am very pleased with it. When paired up with a nice pair of head-phones it creates a beautiful sound. Read morePublished on July 1, 2013 by P. Anderson
In my quest for the perfect Headphone Amp (Under $400.00) I ended up in a high end audio store which had this Amp and a couple of others. The Bellari is a very small Amp. Read morePublished on February 24, 2013 by bareyb
This amp meets my needs 100%. Would it be great two own a several thousand dollar tube amp, you bet! Is this amp built to a price point, yup! Read morePublished on February 12, 2013 by William Hansn
I've been using the straight-out headphone input of a NAD 312 25/wpc integrated amp for over five years now with Sennheiser HD600s and AKG 701s and enjoying primarily classical and... Read morePublished on December 26, 2012 by demcomm
no bass, weak treble, light construction, jacks are not perfect, warnings about inserting wrong plug. Read morePublished on November 24, 2012 by Christian