SKU: 31063196925

PrimaLuna EVO 300 Tube Preamplifier

Sale price$3509.55 Regular price$3899.50
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Description

PrimaLuna EVO 300 Tube PreamplifierAC OFFSET KILLER A PRIMALUNA EXCLUSIVE AC Offset Killer is about goose bumps. The ones you get when music comes out of a background so quiet, you may say to yourself Just how is this possible? PrimaLuna custom winds our own massive toroidal power transformers that are low in hum and EMI. But we wanted more. Our engineers designed the AC Offset Killer to lower transformer noise to a place no other manufacturer dreams of going, regardless of how bad

AC OFFSET KILLER - A PRIMALUNA EXCLUSIVE

AC Offset Killer is about goose bumps. The ones you get when music comes out of a background so quiet, you may say to yourself “Just how is this possible?” PrimaLuna custom-winds our own massive toroidal power transformers that are low in hum and EMI. But we wanted more. Our engineers designed the AC Offset Killer to lower transformer noise to a place no other manufacturer dreams of going, regardless of how bad your electricity is. The result? Sense of space. Texture. The resonance of an acoustic guitar or violin string that seems to trail on forever. The AC Offset Killer will amaze you.

TAKMAN RESISTORS

If you bought a lesser amplifier, you would pay hundreds to make this upgrade. Easy to identify through their pink color, these premium resistors from Japan are popular with those who rebuild and upgrade their gear. "Modders" love TAKMAN for their low noise, linearity, and musicality.

DUAL TOROIDAL POWER TRANSFORMERS

Power transformers generate two types of noise, magnetic and acoustic. That's why toroidal power transformers are used in the very best audio products. Compared to standard transformers, toroids radiate about 1/10 the magnetic field that pollutes music and obscures detail. Additionally, the absence of an air gap typically means toroids have an 8:1 reduction of acoustic noise. As transformers are the most expensive components in any audio product, manufacturers will even house cheaper C-core and EI-core transformers in an outboard power supply box with an umbilical cable rather than upgrade to an expensive toroid. The increased cost is significant, but PrimaLuna doesn’t cut corners. All PrimaLuna products use massive, potted toroidal transformers. PrimaLuna transformers are enclosed in a metal housing and then potted in a non-microphonic resin to further reduce noise and to protect the windings from moisture and deterioration forever. They are massive, resulting in a preamp weighing a substantial 31 pounds.

TUBE RECTIFIED

In the world of preamps, experts agree that tube rectification is the gold standard. It’s quieter than solid state rectification, dropping the noise floor. And it offers the most natural, textured, and vibrant presentation because the circuit is now pure tube. But because it is expensive to implement, you’ll only find it in the top of the line models typically costing $10,000 or more. Finding a preamp using one rectifier tube is sweet. PrimaLuna goes even further using two 5AR4 rectifier tubes in a dual-mono design to present your music with a three-dimensionality that will give you goosebumps.

JAPANESE ALPS BLUE VELVET POTENTIOMETER

The best tube preamps use analogue volume controls. Not volume control chips. Look inside the most well-known brand of tube preamps and you will see a chip called a DS1666-10 Digital Resistor IC. At Primaluna, we understand the temptation to use this chip as they cost $4 each (half that in quantity!). The preamp will sound fine and be quiet, but true to “chips” it will add an electronic “sheen” to the sound. PrimaLuna prefers analogue. And we use the Gold Standard in motorized potentiometers: The iconic Alps Blue Velvet. Why? Because they track perfectly, stay quiet, and don’t sound like chips!

SUPERQUIET LINE INPUTS

Input selector switches leak noise and signals from other sources, as they never turn off the other inputs completely. And, they deteriorate with age, requiring the use of cleaners. Many are mounted on the front panel requiring long runs of wires to the back panel inputs. These wires pick up stray noise from RF and EMI.

PrimaLuna has a better way. Instead of a switch, input selection is done using premium quality sealed relays mounted in the rear where you plug in your components. When an input is selected, that relay closes giving you the best connection possible. All the other relays are left open, so noise and signals from other sources can’t leak in. The signal path is now almost non-existent, so there are no wires to pick up noise.

POINT TO POINT WIRING

You spend a lot of money on interconnects. So why have the signal go right from the RCA jacks or speaker terminals into circuit boards with copper traces so thin you can hardly see them? What’s high-end about that?

PrimaLuna employs Point to Point Wiring on all products. The entire signal path, including resistors and capacitors, is painstakingly hand wired with heavy-gauge cable by craftsman.

DUAL-MONO DESIGN

Expensive and exotic preamps always use a dual-mono design to achieve a level of imaging not possible otherwise. Most manufacturers don’t employ dual-mono because of expense. It requires two power transformers, double regulation circuits, and in fact….everything is double. In effect, dual-mono means building two discrete and separate preamps into one box. It is so expensive to build, it’s a rarity even at the highest price points. All PrimaLuna preamps are dual-mono for the ultimate in stereo imaging and a sense of space that goes on forever.

SMARTGAIN DESIGN

A preamplifier is typically not required to add any gain to your system when you are using it. It is usually lowering gain from the source you are listening to. The number one complaint from audiophiles about preamp performance is noise. So why is it that so many manufacturers design preamps with 20 to 27dB of gain? And you wonder why there is "hiss", and why tubes go noisy or microphonic? PrimaLuna preamps use SmartGain. With a gain specification of only 10.8dB, you will find your PrimaLuna preamp is as quiet as a church mouse. If tubes are less than perfect, you may never know it because they are not amplifying as "loud". High efficiency speaker owner's rejoice!

PERFECTMATCH

Another exclusive PrimaLuna feature is PerfectMatch, a circuit designed to present a perfect 100K ohm impedance to your source components. This is vitally important especially for tube source components, such as phonostages and DACs to sound their very best.

Specifications

  • Output: 2V / CH
  • Frequency Response: 18 Hz – 38 kHz +/- 1 dB, 12 Hz – 75 kHz +/- 3 dB
  • THD: < 0.5% @ 2V
  • S/N Ratio: 93 dB (100 dB A weighted)
  • Input Impedance: 220 kOhm
  • Input Sensitivity: 650 mV for rated output at maximum volume
  • Gain: 9.7 dB
  • Power Consumption: 61 Watts
  • Weight: Net weight: 52.8 lbs / 24 kg, Shipping Weight: 63.8 lbs / 29 kg
  • Dimensions: 15.9" x 15.2" x 8.1" / 405 x 385 x 205 mm (L x W x H)
  • Shipping Dimensions: 22.7" x 18.4" x 12.4" / 577 x 468 x 315 mm (L x W x H)
  • Inputs: 5 pairs Stereo RCA, 1 pair Home Theater Input
  • Outputs: 1 pair RCA Tape, 2 pairs Stereo RCA
  • Tube Complement: 2 x 5AR4, 6 x 12AU7
  • Output Impedance: 256 Ohm
  • Remote Control: Full
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: 31063196925

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4.8 ★★★★★
Based on 855 reviews
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Product Reviews
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Verified Purchase
SleepingKnight
Port Orchard, US
★★★★★ 5
The squeak might die the ball does not.
Color: Orange Squeak Toy, Size: Medium
If you want to cut to the chase YES THIS PRODUCT WORKS, if you want more details then continue reading. So for starters, we have a 75 pound Doberman whom we call "The Destroyer of All Things". Anything she can tear into (toy wise) she will dismantle in a matter of minutes. It's been very frustrating trying to find toys that will last long enough to occupy her playtime without us feeling like we may as just hand her money to shred up and throw in the garbage. I will say that my dog, however, is also a "picky" destroyer and will not simply chew and destroy and play with just any toy. I bought her a solid hard rubber ball once that weighed a ton and because it was so stiff and had zero give and was actually indestructible (to her standers) but, she played with it for a matter of 30 seconds before never touching it again. If it's too solid and indestructible she gets no satisfaction from it and won't play with it, which is also a waste of money since it's been sitting at the bottom of her toy bin ever since. So trying to find a toy that is a balance of fun for her and durable for our pockets was a hard task, until now. My husband somehow stumbled upon this ball and hopeful from all the glowing reviews (but still skeptical so we wouldn't be disappointed if it didn't work) we ordered it immediately. We have NOT been disappointed thus far and she's had it for a month!! Just like some reviews have said, the squeak did not last long, but that wasn't surprising. Our dog's favorite toys used to be the yellow tennis style kong balls and she'd have the squeak killed in a matter of seconds until it only wheezed and then she'd tear up the ball itself. Which is why we needed to find a replacement that she could shred into tiny rubber pieces all over my floor. This ball really truly was not annoying when is squeaked, until the piercing shrieking noise the Kong tennis balls made this one was pretty chill on the noise level and I didn't mind it at all while it worked. If the squeaker hadn't died I wouldn't have been driven up the wall with the noise and bonus my dog still loved it either way. But, the squeak didn't last long, maybe a few minutes at most. However, I continued and continue to monitor this ball for any other signs of defeat and have yet to find ANY. Not a tooth mark, not a nick, nothing, nada, ZILCH. This ball is soft enough that it has some give when she chomps down on it, but it's durable enough to bounce back and not snap or crack or break under pressure. The give my dog gets from chewing on it keeps her attention because I think it gives her some false sense of hope that she might still be able to destroy it. So even after a month, she's not lost interest. Also, even though the squeak has died when she chomps down on the ball it sort of makes a clicking/suctioning noise which also makes her very happy to play with it. She loves it when we toss it down the hallway because of the softer rubber it has a rather unpredictable bounce and so she never quite knows where it's going to go. Highly recommended and I cannot wait to test out other products from this brand and buy her a couple of more balls to have around the house in replacement to her old Kong balls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2020
J
Verified Purchase
JV
Cuba, US
★★★★★ 5
Good dog product
Color: Pink Squeak Toy, Size: Medium
We’ve had the squeak balls for many years. The squeaker doesn’t last long with an aggressive chewer. Our dog squeaks the ball so much, she makes the ball split. We remove the squeaker and the ball continues to be used for a few years until it splits enough we throw them out. The ball has good bounce. We leave them outside all year and they have lasted thru snow and hot weather. The ball has been 2 of our dog’s favorite toy.
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Reviewed in the United States on December 30, 2025
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Verified Purchase
Kelli
Charlottesville, US
★★★★★ 5
Extremely durable even for destructo-dogs!
Color: Orange Squeak Toy, Size: Medium
I got this for our chew-monster Bruce, a very large German Shepherd & (we think) Great Dane mix, after he repeatedly demonstrated his ability to utterly destroy the large Kong squeaky tennis balls within a matter of minutes. He LOVES some squeak, so he obsessively squeaks his toys until they're crushed. After some research on longer-lasting toys, I splurged on one of these, fully intending to guilt the dog forever if he destroyed this much more expensive toy. It's been 2 months, and this ball is not only still squeaking, but it isn't chewed or destroyed AT ALL, despite Bruce's best attempts! It's smaller than his other balls, and because it's a slicker texture, it slides out of his mouth more easily. However, it squeaks when it hits the ground, and he can entertain himself with it for long periods of time. Pros: - Super durable - Squeaker is molded in so it can't come out (unlike the other toys we've bought) - Bright orange is WAY easier to see in the grass than stained green/yellow tennis balls - Easy to clean Cons: - I wish it were slightly larger, because his mouth is so big. No issues with swallowing it or anything, but if they had an XL size (like other super-large sized balls) we'd go for it. Orbee, let us know if you decide to upsize! - It doesn't squeak quite as easily as other squeak balls, but Bruce figured out how to make it work. He sometimes will even hold it against the ground to squeak it faster. - It doesn't squeak as loudly as the faux tennis ball kinds, but wait...that's not a bad thing. It's still loud enough for him to enjoy, without the neighborhood rioting. Overall I can't recommend this toy enough. We feel safe letting him play with it since the squeaker can't come out, and it's paid for itself repeatedly - we were going through a 6-pack of squeaky tennis balls per week (or more!), and haven't had to buy any in the last 2 months because this ball is still in pristine condition.
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Reviewed in the United States on February 26, 2019
J
Verified Purchase
Jonathan H.
Pawtucket, US
★★★★★ 1
Poor quality — squeaker lasts 2 minutes
Color: Blue Squeak Toy, Size: Medium
These balls used to be great quality and long lasting. Something changed about a year ago and now the quality is considerably less to include the squeaker becoming inoperable within 2 mins of play. Not sure if the raw materials or the manufacturing process changed, however the decline in quality is obvious. I do not recommend this product to anyone who has a dog that is larger than 10-15 lbs.
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Reviewed in the United States on April 16, 2026
L
Verified Purchase
LizO
Port Orchard, US
★★★★★ 4
STROBE: Favorite Ball, durable, decent battery life
Color: Glow in the Dark Strobe Toy, Size: Medium
*Update since Outward Hound redesign: The new version doesn't seem to light up as consistently on every bounce and seems to light up in a more seizure inducing way (I'm sorry I couldn't think of a better description). The light also seems to die much faster with the new version. The inner light and batter actually popped out its encasement in one ball after about 2 months of use, only by my Golden who doesn't chew particularly forcefully on it. I did notice right away and check regularly for damage, just putting that out there as a warning. It is still by far my dog's favorite ball. Original: This is my Golden Retriever's absolute favorite ball! Particularly the strobe light up ball but she's happy with any Planet Dog ball to the point that she looks at me for the "good ball" to fetch with if i try to have her play with a ball from a different company. Pros: by far my dog's favorite ball - good bounce, and good squish factor yet durable -larger size: safe for large dogs -lights up to see at night -decent battery life -rain does not affect battery Cons: -battery is not replaceable/ rechargeable (though I'm not sure it's an option without seriously altering the design) -regular glow (once battery is dead) is not great -only lights up on a bounce and shortly after that - If your dog bites down particularly forcefully it can displace the battery which typically kills it; if submerged in water (my dog tends to place it in her water bowl when she takes a break while fetching), it is reduces battery life, both make me worry about safety The ball always out lasts the lifespan of the battery for the light, I'd say we average about 1 month per ball while the light works with about 1 hour of use almost everyday. The ball does hold up to some of my dog's friends that are super chewers including one that is a Cane Corso. I don't let them sit and work at chewing it but they definitely squeeze it in their mouths with a good bit of force. My girl is happy to play with the ball even once the battery dies but I prefer to have the light so I can find the ball when needed. The glow color does glow when placed under a flashlight for a few minutes first but I find it doesn't glow as well or as long as other company's glow toys. My dog has a tendency to drown it in her water bowl to keep it nearby or rinse off any dirt and that definitely shortens the battery life but using it in the rain doesn't seem to affect the battery life I think this being my dog's favorite has to do with the good bounce and squeeze factor this ball has. I like that it's slightly bigger than a tennis ball so I'm comfortable with large dogs playing with it. It fits in the "large" chuck it ball launcher. I actually discovered this specific ball when another dog had it and my dog kept taking it instead of her other light up ball that she had played with happily for months.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2023

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