Reviews by KimChee

KimChee

Headphoneus Supremus
Pros: Great sounding op amp at a reasonable cost that enhances the listening experience.
Cons: None, that I can see, it does consume a bit more power, and distorts at extremely loud listening volumes.
Burson Audio Supreme Sound Opamp V5i

Before writing this review I would like to thank Carlos of Burson Audio for sending me the Burson 5vi to test and review. He has has kindly offered me a free trial of the Burson V5i op-amp in return for my honest feedback.

The V5i can be used to substitute for many op-amps of different models. A nice
bonus provided by Burson Audio, an Australian company, is the lifetime warranty for the V5i.

About Me:

I am a musician and artist who became interested in the High Fi audio scene about 10 years ago. I own and play several instruments and am interested in mixing. I tend to favor heavy metal, death metal, and hard rock, but I also listen to Jazz, Bluegrass, Trance, BlueGrass, and Folk music.

I own a few TOTL CIEMS one of them being the JH Roxanne. I own a few TOTL DAPs like the Astell & Kern AK380 Copper +Copper amp and Lotoo Paw Gold Diana Edition as well as more budget friendly items such as the
Zishan Z1, Walnut Stack, KZ ZS7, and CCA C16.

I have done some op-amp rolling in the past with cmoy type amps, and
believe op-amps make a change in sound. My main experience
is with the Lehman black cube, Objective 2 amp, Little Dot I-IV,
and the Matrix M Stage Amps.

Testing equipment:

DAP: Zishan Z1, Walnut V2S/Walnut F1 (Walnut Stack
IEMs: KZ ZS7, CCA C16, JH Roxanne CIEM
OP-amps: Burr-Brown OPA227, Signetics NE5532, (Zishan Z1 stock),NE5532 (Walnut
V2S stock)

Packaging:

The op-amps come in a fully protected, sealed and professional looking box. The op-amps are extremely well
built like little tanks.


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Installation:

Fortunately, the Zishan Z1 and Walnut 2VS installation is straight forward, plug and play, as I'd have to dig up my old Weller soldering gun, and my desoldering iron.

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Burn In:

I am a firm believer in burn in, I burned both op amps in for 100 hours each.
I noticed the first big change after approximately 50 hours of burn in with a
further refinement after 100 hours.


Sound Impressions:

Of course, any review of this kind is subjective as a reviewer's taste in
music varies. Thus, it is very subjective.

Highs:

One thing I dislike about the Z1 is that the highs lack detail, there is a
grain to the sound. There is a lack of clarity and extension. With the Burson
the grain is gone. The highs gain clarity, sparkle, and increased extension.
There is much more micro detail. They gain air and refinement.

Mids:

Both male and female voices sound more natural and realistic. There is an
increase in detail. The midrange details sound less congested, has a more
natural timbre, and a warmer tonality.

Bass:

The bass has more impact, the bass is much more detailed and has more texture. It is more defined and tighter with much greater detail.

Soundstage:

The stage gains width and depth, and there is an increase in clarity, layering,
and dynamics. The sound is more musical, but with greater detail and a better sense of space.

Positives:

Clarity, transparency, speed, and instrument separation
are the main sonic characters of the Op-Amp. There is no coloration of sound.

Negatives:

The op amp provided a couple hours less battery life due to increased
power consumption. The op amp distorts are very loud volumes more quickly
than the stock op amps.

Summary:

The Burson 5vi is a worthy upgrade to budget and mid level DAPs, the increase
in bass performance and clarity is worth the price of admission alone. I was
also pleasantly surprised by the increase in the high end, and just the overall
dynamics and separation of the sound. The 5vi excels in all sound areas over
stock and is a very nice upgrade.
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