SKU: 69599643197

Violectric HPA V550 PRO Desktop Headphone Amplifier and Preamp

$2249.55 $2499.50
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Description

Violectric HPA V550 PRO Desktop Headphone Amplifier and PreampDesigned to drive everything from low to high Z loads for headphones or loudspeakers, the HPA V550 Pro Headphone Amp and Preamp from Violectric delivers versatile functionality and low noise, low distortion circuits specially optimized for dynamic and orthodynamic headphones. With support for headphone impedance loads of 16 to 600 ohms, the V550 Pro can drive the most demanding headphones, while pre gain selection via DIP switch and pre or post fader

Designed to drive everything from low- to high-Z loads for headphones or loudspeakers, the HPA V550 Pro Headphone Amp and Preamp from Violectric delivers versatile functionality and low-noise, low-distortion circuits specially optimized for dynamic and orthodynamic headphones. With support for headphone impedance loads of 16 to 600 ohms, the V550 Pro can drive the most demanding headphones, while pre-gain selection via DIP switch and pre- or post-fader selection make the unit equally comfortable as a high-fidelity studio preamplifier.

The V550 Pro sports balanced stereo Neutrik XLR outputs and inputs, two unbalanced RCA inputs, four unbalanced RCA outputs, two unbalanced 1/4" stereo TRS headphone outputs, and one fully balanced, Neutrik XLR 4-pin stereo headphone output with gold-plating for true balanced headphone amplification. This amp features plenty of control over your amplified signal with 256-step relay volume control with balance knob, dedicated input and output selection, and a wireless infrared remote control for conveniently controlling volume and selecting inputs or outputs.

Specifications

Number of Headphone Channels
Single Channel
Recommended Headphone Impedance
16 to 600 Ohms
Headphone Output Power
6400 mW into 50 Ohms (Max)
735 mW into 600 Ohms (Rated)
EQ
No
Display
No
Connectivity
Analog Audio I/O
2 x XLR 3-Pin Balanced Line Input (1 Stereo Pair, Rear Panel)
4 x RCA Coaxial Unbalanced Line Input (2 Stereo Pair, Rear Panel)
2 x XLR 3-Pin Balanced Line Output (1 Stereo Pair, Rear Panel)
2 x RCA Coaxial Unbalanced Line Output (1 Stereo Pair, Rear Panel)
1 x XLR 4-Pin Balanced Stereo Headphone Output (Front Panel)
2 x 1/4" TRS Unbalanced Stereo Headphone Output (Front Panel)
Digital Audio I/O
No
Network I/O
No
USB
No
Performance
Frequency Response
5 Hz to 250 kHz -0.5 dB
Gain/Trim Range
0 dB +6 dB
Maximum Input Level
+21 dBu
Maximum Output Level
+21 dBu
Dynamic Range
> 131 dBA
Impedance
Line Inputs:
10 Kilohms
Outputs:
< 1 Ohm
THD+N
< -102 dB / < 0.0008% (At 1 kHz, 2 x 10V, 100R = 1W)
< -100 dB / < 0.001% (At 1 kHz, 2 x 4V, 32R = 0.5W)
Noise
< -103 dBu (A-Weighted)
Crosstalk
-105 dB (At 1 kHz)
-100 dB (At 15 kHz)
Channel Balance
6 dB
Damping Factor
320 at 50 Ohms (Unbalanced)
160 at 50 Ohms (Balanced)
Power
Power Requirements
AC Input
AC Input Power
115 to 230 VAC, 50 / 60 Hz (T 1 A)
Ground Lift
Yes
AC/DC Power Adapter
No
Power Consumption
50 VA
Physical
Dimensions
11.4 x 10 x 3.1" / 29 x 25.4 x 8 cm (with Feet)
Packaging Info
Package Weight
12.495 lb
Box Dimensions (LxWxH)
14.5 x 13.3 x 5.4"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 69599643197

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4.6 ★★★★★
Based on 27 reviews
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Verified Purchase
Dianna H
Battle Creek, US
★★★★★ 5
Not Scented, but Dog Approved
Size: 2-pack, Style: Duo
They don't smell like peanut butter or bacon. But our dogs still love them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2025
W
Verified Purchase
waragon
Phoenix, US
★★★★★ 4
If they squeaked, they would be the perfect ball!
Size: 2-pack, Style: Duo
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in plat time. And they are keeping him busy at home - that’s a good thing. The scent is subtle but strong enough for him I guess because he loves gnawing on them. If they had squeakers, they would be absolutely perfect. Hopefully Chuck-It will see an opportunity for that down the road!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
R
Verified Purchase
Reepeat
Grantham, US
★★★★★ 5
Most durable fetch balls I know of.
Size: 2-pack, Style: Duo
These balls are the biggest balls of them all. Well, not the biggest, but the best. Every other ball she would chew up in short order and I'd be throwing her a floppy piece of rubber. She just wants to fetch, but if it's not bouncing, she can't catch it on the bounce. Got these balls in July and no damage to them. I just ordered another pair, but only because the other two somehow got stuck up in trees. We have some very old and very large oak trees so not so easy to retrieve. Hope they somehow drop someday. But in the meantime, Lassie will be happy with her new ones. Very highly recommended!
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Reviewed in the United States on October 28, 2025
B
Verified Purchase
Blonde Aggie
Alexandria, US
★★★★★ 5
Works great for scent work! Bounce is great for air retrieve!
Size: 2-pack, Style: Duo, Size: 2-pack, Style: Duo
My dog doesn’t know he loves them yet but I do! They are a little softer so when we do air retrieve, I don’t have to worry as much about his teeth! I’m hoping he will learn to find them by smell vs sight. We often play in the evenings and he tends to loose his ball. Love chuck it! Right now, we have about 10 chuck it balls! The tennis balls don’t work for air retrieve! Chuckit does!!! Love the thrower too! Saves my arm!!!!
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Reviewed in the United States on August 6, 2025
N
Verified Purchase
None of your business
Lowell, US
★★★★★ 3
I guess the smell is offputting
Size: 2-pack, Style: Duo
My dog loves chocolate stuff. But for some reason, wasn’t a huge fan of these balls. She played with them a little bit, but they’re not her favorite.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025

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