Magni 3

Headphone Amp and Preamp

AC Adapter






STATUS: In stock. Orders placed now shipping in 1 to 3 business days.

Go ahead. Compare the third-generation Magni to anything out there at its price. We think you’ll find there’s really no competition. This is no “starter amp.” Magni has the power, performance, resolution, and versatility to meet all your needs—no matter the headphone. 
Ready For Any Headphone
Magni 3 is ready for any headphone, from IEMs to hard-to-drive planar designs. With a full 2000mW into 32 ohms—rated in the most honest way, RMS continuous, both channels driven—Magni has tremendous reserves of power. Combined with low distortion, an exceptionally low noise floor, and switchable gain, Magni is ready for any headphone.
Powered Monitors Welcome, Too
Magni 3 includes preamp outputs. This means you can connect it to your desktop powered monitors for a complete system—or even connect it to a speaker power amp and use it as a preamp. With its built-in time-delayed start-up and instant shut-down, there’ll be no glitches or pops through either headphones or speakers, either.
Forget $99—Compare at Many Times the Price
Most headphone amps in Magni’s price range use op-amps (integrated chips) for gain and power output. Not Magni. Magni’s gain stage is an-all-new, fully discrete, high-speed, dc-coupled, current-feedback design, completely different than the first and second-generation Magnis. This current-feedback gain stage is typically only found in very exotic designs that sell for more than 10x the Magni’s price. 
Made in USA
By “made in USA,” we mean made in USA. The vast majority of the total production cost of Magni—chassis, boards, assembly, etc—goes to US companies manufacturing in the US. Our board house is 20 minutes away from our office, and our chassis guys are just over the hill in the Valley. Yep, the wall warts are from China, but there you go. There is some give and take to reach this price point.
2-Year Warranty and 15-Day Return Policy
Magni is covered by a limited warranty that covers parts and labor for two years. That’s 2x the coverage of most amps in this price range. And, if you don’t like your Magni, you can still send it back for a refund, minus 15% restocking fee, within 15 days of receiving your amp.

Frequency Response: 20Hz-20Khz, -0.1db, 2Hz-900KHz, -3dB

Maximum Power, 16 ohms: 3W RMS per channel
Maximum Power, 32 ohms: 2W RMS per channel
Maximum Power, 50 ohms: 1.3W RMS per channel
Maximum Power, 300 ohms: 430mW RMS per channel
Maximum Power, 600 ohms: 230mW RMS per channel
THD: Less than 0.001%, 20Hz-20KHz, at 1V RMS, less than 0.02% at 5V RMS into 32 ohms
IMD: Less than 0.001%, CCIF
SNR: Greater than 108db, unweighted, referenced to 1V RMS
Crosstalk: -70dB, 20 Hz-20KHz
Output Impedance: Less than 0.3 ohms at either gain
Gain: 2 (6db) or 7 (17db), selectable via rear switch
Topology: fully discrete, fully complementary all-bipolar, symmetrical current-feedback design with no capacitors in the signal path and DC servo
Protection: Standard failsafe DC power input and muting relay
Power Supply: “Wall wart” style 24VA 14VAC transformer, regulated +/- 17V rails with over 6,000uF filter capacitance
Power Consumption: 6W
Size: 5 x 3.5 x 1.25”
Weight: 1 lb

Is this a half-Jotunheim?
It’s not like you can chop Jotunheim’s Pivot Point topology in half. But, like Jotunheim, Magni 3 uses a discrete, current-feedback gain stage that provides ultra-high performance. Unlike Jotunheim, Magni’s gain stage is fully complementary, all-BJT, and single-ended. The main point is it’s a super-high-end, exotic-topology, no-excuses, do-all headphone amp—that just happens to cost $99.

And it makes like 2x the output power of the original Magni?
And you threw in all the good Magni Uber stuff, too—pre outs, aluminum top?
And the bigger wall-wart (er, we mean "linear power supply," gotta use audiophile lingo.)
And it’s the same price as Magni 2?
Yes. Development improves the product. As do larger production runs.
So what’s the difference between the 3rd generation Magni and the previous generations?
It’s actually easier to say what’s the same, because basically, even though it looks the same, it’s a totally different amplifier. 
Yeah, that’s cool and all, but break down the differences, please.
Okay, here you go:
  • One model. There’s only one third-gen Magni, and it’s $99.
  • Totally different gain stage. Magni 3's fully discrete, fully complementary, current feedback gain stage is completely and totally different than the previous Magnis. The previous amps’ discrete Lin-style topology was a conventional voltage-feedback design. 
  • Power supply. We kept the 21VA transformer and higher capacitance of the former Uber model.
  • Better cosmetics. The aluminum top is standard.
  • Faster shut-down. the muting circuit now acts instantaneously on shutoff.
  • Improved potentiometer curve. we tweaked the potentiometer to have a slower ramp from minimum volume, which improves tracking at low volumes.
Wait a sec, is this “current feedback” thing like “current output” with a really high output impedance?
No. It’s current feedback, not current output. The output impedance is a low 0.3 ohms. 
Let’s talk tech. So what’s the big deal about current feedback?
It provides a dramatically faster gain stage with inherent symmetry. When applied to a headphone amplifier, it gives us an amplifier stage that extends far, far beyond the audio range (if not for the input filter, this stage runs out beyond 6MHz), and still provides better measured performance than any amp stage we’ve ever made to date, except for maybe Jotunheim.
What’s this about DC coupling?
Magni has no capacitors in the signal path at all—that’s what we mean by DC coupling. This eliminates any sonic effect a capacitor in the signal path might have on your system.
And you said this will drive any headphone?
Including hard-to-drive orthos?
Including IEMs?
So you probably cheaped out and left the protection off this amp, or something stupid like that, right?
No. Magni has relay mute for delayed startup and fast shut-down. You can leave your headphones plugged in all the time. It also automatically disconnects the preamp outputs when you plug headphones in. Amazing things, switches.
So why would I buy any of your other amps?
Class A. Tubes. You like larger things. Lots of reasons, really. But we’re dead serious—this is really all you need.
I want a combined DAC/amp! Why didn’t you put a DAC in here?
We did. They’re just in a different chassis and costs another $99-249. They’re called “Modi 2” or “Modi 2 Uber” or “Modi Multibit.” Modi 2 even has a matching aluminum top now. Stack the two and tell yourself it’s a combined DAC/Amp for $198-398.
Hey, so does that mean I can plug in some uber-special, gold-plated, cryo-treated, 85-lb 2000VA wall wart and have even better performance?
Unless you know what you’re doing, we don’t recommend that. Magni uses an AC wall wart. Most are DC. DC won’t work.
But I heard all amps sound the same! You’re bullshitting us!
If it’s your experience that all amps sound the same, that’s cool. There are plenty of other options out there, including the one that came in your phone, for free.
What the hell is a Magni?
In Norse mythology, Magni was one of Thor’s sons. There’s this amazing resource called Wikipedia. You may have heard of it.