or Connect
Head-Fi.org › Head Gear › Headphone Amplifiers › Portable Amps › Vorzuge VorzAMPduo

Vorzuge VorzAMPduo

Posted

Pros: Smooth, crystal clear sound; insane +15dB bass switch; Treble switch for dark cans; Excellent build quality; Extremely portable

Cons: No gain switch: Sensitive IEMs slightly loud; Expensive for non-audiophiles; Without bass switch, sub-bass is rolled off

[Originally posted as Basshead.Club]

duo_07-500x317

In the search for the best basshead gear, we’re willing to search far and wide. In this case, we’ve landed on an amplifier from a boutique audio company in Germany called Vorzüge.

They have a beautiful little amplifier called the VorzAMP Duo. What makes this a basshead amp? EQduo. In short, it provides both a Bass switch and a Treble switch, and good lord does the bass kick into high gear with that switch (we’re talking about +15dB of sub-bass with the flick of a switch–measurements later).

Vorzuge VorzAMP Duo In the box

  • VorzAMPduo (Headphone Amplifier)
  • VorzKabel (20cm long)
  • Set of Li-ion batteries (2x1000mAh)
  • Protective pouch
  • USB Power Adapter (100AC to 230AC)
  • Mini USB to USB Cable (Charging from Computer)
  • A nice padded box
  • Documentation

vorzamp case

I’ll talk about the features for a moment before diving into the sound. It’s about the size of a deck of cards, so it’s easy to transport in your pocket. Internally, they use silver solder with gold compound on the gold plated PCB, high grade metal film resistors, quality metallic capacitors, and 4 internal amplifiers. If you like the Earth, it is also RoHS compliant, so it’s environmentally friendly.

They’ve refined and revised this beast over time to make it feasible to use IEMs as well as high impedance headphones without the need for a gain switch, and it’s a fully analog system. The battery power gives you about 26 hours of play time per charge, and it charges via USB. One great feature is that you can use the amp while it’s charging, which is a weakness in one of the oft-recommended competing basshead amps, the Cayin C5.

It has one 3.5mm input and one 3.5mm output. No room for balanced or extra frills here. On the back is the mini USB input for charging. The volume pot and power switches are metal, while the EQduo switches are plastic. The entire chassis is a nice lightweight metal and feels very solid.

On to the sound… the standard configuration without either switch flipped is wonderfully clear. It rolls off a little in the sub-bass and feels like it cleans up a little bit of the upper frequencies for me on my hotter cans. Great separation of instruments, excellent detail and soundstage, and all of the other fun audiophile buzzwords come out positive. I often listen to it with no switches flipped, but what I’m really interested in is the Bass switch.

BOOM. +15dB, peaking just below 20Hz and diving down quickly enough that it doesn’t bleed into the mids. Phenomenal. To put this in perspective, the commonly recommended basshead amp over on Head-Fi is the Cayin C5. It gives +5dB of bass and bleeds a bit into the mids. To be fair, it’s also much cheaper.

The Treble switch gives just a few dB of extra high end, which is great for some headphones like my JVC HP-DX1000, although I tend to prefer rolled off highs anyway. It has been noted by some that the Treble switch introduces hiss, but that hasn’t been my experience.

What are the weaknesses of this extremely capable portable amplifier? There are two. First, it’s expensive. A boutique amp with incredibly high grade components demands a high price tag, and this is starting to approach Summit-Fi at $520–though many audiophiles would consider that to be a perfectly reasonable price.

The second weakness is volume. While it can drive low impedance IEMs, I like to listen to music all day long. It’s simply too loud for 16 Ohm earphones if you’re feeding a line-level signal into the amp and want to listen all day. You either have to reduce the volume at the source (which can mess with signal quality) or come up with another solution. I came up with another, and I purchased a 75 Ohm Etymotic adapter. This makes those 16 Ohm IEMs essentially 91 Ohms, so the volume is no longer an issue. You can get decent ones from eBay for under $20 (ping me if you want to know who I bought them from–I’ll probably review those separately later).

Is this the best basshead amplifier on the market? It is the best I’ve heard, and I’ve tried quite a few. The Bass boost is absolutely bonkers, and it has extremely good clarity as well. It works both as an always-charging desktop amp or a portable amplifier. It works with IEMs (especially if you reduce the line volume or grab an adapter) on up to high impedance headphones (my most demanding are the Sennheiser HD650, and it did wonderfully with them). It costs a lot, but you get a lot for it.

If you’re a basshead and can afford it, the Vorzuge VorzAMP Duo amplifier is glorious. Check this beauty out at the Vorzuge website.

Vorzuge VorzAMP Duo Measurements

I wanted to perfect my measurement setup before reviewing this amp, but alas, I still haven’t perfected it. At some point, I’d love to get THD and all the rest posted here, but for now, you get a frequency response graph that includes the Bass and Treble switches. Look at that BASS!

UPDATE: I now have RightMark Audio Analyzer results for the VorzAMP Duo. These will be meaningless to all but the most hardcore amp-heads, but I love data and measurements. This is coming from the Sound Blaster ZxR DAC at 192kHz and is being measured by the DBpro card with a 75 Ohm load.

http://www.basshead.club/measurements/vorzuge_vorzamp_duo/

VorzAMP_duo_eqduo

Vorzüge VorzAMP Duo

$520
Vorzüge VorzAMP Duo
9

OVERALL SOUND

9/10
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

FEATURES

8.5/10
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

BASSHEAD POTENTIAL

9.5/10
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

BUILD QUALITY

9/10
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

REVIEWER BIAS

9/10
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

PROS

  • - Smooth, crystal clear sound
  • - Insane +15dB bass switch
  • - Treble switch for dark cans
  • - Excellent build quality
  • - Extremely portable

CONS

  • - No gain switch: Some IEMs loud
  • - Expensive for non-audiophiles
  • - Without switch, sub-bass rolled off
  • - Wish bass had levels (+5/+10/+15)
  • - No rubber feet--slides on my desk
 

Posted

Pros: Gd size, detail-driven, spacious & gd seperation, neutral w/boosts off, bass boost GREAT, treble boost very effective, dead silent (treble boost off)

Cons: So-so battery life, treble boost attracts some noticeable hiss, front panel a bit crowded (though I do prefer having in and out on the same side)

Taking size, weight, shape, design, sound quality, and other pluses (EQduo, good looks, German engineering), this is up till now my ultimate choice (I STRESS: up till now) for portable amps.

 

Bass boost is a dream comes true even for a non-basshead like me.............it raises the level of the bass fairly linearly from the very bottom to midbass without sacrificing any bit of the bass details. It offers a real tight bass with plenty of oomph and slam, without any hint of flabbiness.

 

Treble boost, on the other hand, works not to extend the highs into the cloud........rather it serves mainly to raise sharpness and musicality.............emotional info in vocals (especially female vocals) get across more freely. It MUST be noted that the treble boost attracts a noticeable amount of hiss - it is not really discernable when the music is on but it is definitely there.

 

(Coming from RSAssss, 2Stepdance, ADL Cruise, GSlee Voyager, L3, and tried uHA120)

 

P.S. With all its goodness..........I'd say it's still a bit on the pricey side............hence -1 star for value. It's worth its price, yes, but definitely not the bargain of the year.

Vorzuge VorzAMPduo
Description:

VorzAMPduo™ comprises of 4 internal amplifiers with top notch components to give its listeners the ultimate audio experience/clarity. Besides great audio fidelity VorzAMPduo™ packs enough power to feed any energy hungry professional Headphone. Through our handcrafted assembly, stringent testing and audio matching procedures our boutique company is able to ensure high hardware quality. VorzAMPduo™ is a fully Analog System, meaning absolutely no quantization error or any inaccuracy due to Aliasing. The audio capabilities of this exceptional Headphone Amplifier exceeds beyond the audible range into the subsonic and supersonic frequencies; this is because research has shown that though such frequencies can’t be heard, it can be felt. VorzAMPduo™ has the unique EQduo™ integrated into its circuits, compacting the function of a professionally preset Equalizer into a portable device.

Details:
DetailValue
Models:
Model Name/TypeMPNEAN/UPC
Head-Fi.org › Head Gear › Headphone Amplifiers › Portable Amps › Vorzuge VorzAMPduo