The Rolls Bellari HA540 MK2 is a headphone amp intended to work with a wide array of cans, from consumer to audiophile-grade. The amp utilizes a 12AX7 tube running at 150V. As such, the HA540 MK2 produces a clear, powerful sound when paired with CD players, computers, or DACs.
On the front of the unit you'll find 1/4" and 3.5mm stereo headphone jacks, as well as a prominent volume knob. The rear gives you RCA and 3.5mm inputs on channel one and RCA connections on channel two. Switch between the two inputs with the Input Select button on the front.
A RUBY 12AX7 is supplied with the amp, though you can swap it out with an ECC83 or other variants of the 12AX7 design. While almost all the gain comes from the tube stage, the output section is powered with MOSFET circuitry for a weighty sound, one that offers solidity of tone and a real analog feel. There is no feedback circuit or integrated circuit in the audio path. A 15V power supply is included.
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Key Features
- For DACs & Other Playback Media
- For Consumer & Audiophile Headphones
- Inputs Powered by Included 12AX7 Tube
- Output Utilizes MOSFET Circuit
The Rolls Bellari HA540 MK2 is a headphone amp intended to work with a wide array of cans, from consumer to audiophile-grade. The amp utilizes a 12AX7 tube running at 150V. As such, the HA540 MK2 produces a clear, powerful sound when paired with CD players, computers, or DACs.
More DetailsBellari HA540 MK2 Overview
UPC: 675889054002
Bellari HA540 MK2 Specs
Key Specs
| Number of Headphone Channels | |
| Recommended Headphone Impedance | |
| Headphone Output Power | |
| Audio I/O |
| Form Factor | |
| Number of Headphone Channels | |
| Recommended Headphone Impedance | |
| Headphone Output Power | |
| Analog Circuitry |
Connectivity
| Analog Audio I/O |
Performance
| Frequency Response | |
| Gain/Trim Range | |
| Impedance | |
| THD+N | |
| SNR | |
| Crosstalk |
Power
| DC Input Power |
Physical
| Dimensions | |
| Weight |
Packaging Info
| Package Weight | |
| Box Dimensions (LxWxH) |
Bellari HA540 MK2 Reviews
Sweet sound
By Robert
Rated 5 out of 5
Date: 2025-01-30
Nice smooth Sweet sound carries highs mids and lows in a nice distinctive clarity Marry's exceptionally well with my two channel system.
In a class of its own.
By Igor
Rated 5 out of 5
Date: 2021-09-14
I bought the amp for the following reasons: 1. It is made in the USA; 2. It is vacuum tube based, pure class A amp; 3. The price. I have replaced the stock tube with a Mullard re-issue tube and let it bake for the total of 24 hours. I use it with HiFiman Sundara, Vincent integrated as the tube pre-amp. The sound is very balanced, non-fatiguing but not excessively tube-warm. It's a pleasure to listen to for hours. Highly recommended.
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