Schiit Magni 3+ - Amp - Official Thread

The Magni 3+ is an all-new iteration of Schiit’s most diminutive line of desktop headphone amplifiers, featuring increased power, a new topology (more similar to Vidar than the prior Magni 3), and better performance, both sonic and measured.

Price remains the same $99 as the out-going model!

Magni 3+ is introduced along side the “Magni Heresy”, which is the same price, but a different take on the product - focusing on ultra-high measured performance instead of discrete design. In Schiit’s words:

For Magni 3+, we pulled out all the stops in designing the highest performing discrete Magni ever, by any metric—power, distortion, or noise floor. But it’s easy to get even higher measured performance from integrated (op amp) designs, so we decided to give you a choice, with Magni Heresy.

  • Choose Magni 3+ for the ultimate expression of an affordable all-discrete current-feedback headphone amp. It’s now seriously a mini speaker amp, right down to the driver stage and Vbe multiplier. Magni 3+ is in our traditional silver and gray chassis.

  • Choose Magni Heresy for insanely great measurements from an all-op-amp based headphone amp that uses super high quality parts, including a multiple paralleled output stage with feedforward. Magni Heresy is in a black and red chassis.

And if you have trouble deciding between the two, Schiit has a nice proposition for you:

If you want to compare, you can buy both, keep both for 30 days, and return one with no restocking fee (for the first 250 orders).

Specifications

Frequency Response: 20Hz-20Khz, +/-0.04dB

  • Maximum Power, 16 ohms: 2.8W RMS per channel
  • Maximum Power, 32 ohms: 2.4W RMS per channel
  • Maximum Power, 50 ohms: 1.6W RMS per channel
  • Maximum Power, 300 ohms: 410mW RMS per channel
  • Maximum Power, 600 ohms: 215mW RMS per channel

THD+N:

  • High Gain: Less than 0.0013% (-98dB) at 1V RMS into 32 ohms
  • Low Gain: Less than 0.0005% (-106dB) at 1V RMS into 32 ohms

IMD:

  • High Gain: Less than 0.01% (-80dB) at 1V RMS into 32 ohms, CCIF
  • Low Gain: Less than 0.002% (-95dB) at 1V RMS into 32 ohms, CCIF

SNR:

  • High Gain: Greater than 104dB, A weighted, referenced to 1V RMS
  • Low Gain: Greater than 115dB, A weighted, referenced to 1V RMS

Crosstalk: Less than -70dB, 20 Hz-20 kHz in either gain

Output Impedance: Less than 0.2 ohms at either gain

Gain: 1 (3db) or 6 (18db), selectable via rear switch

Topology: Fully discrete, fully complementary all-bipolar, symmetrical current-feedback design with driver stage and Vbe multiplier, no capacitors in the signal path and DC servo

Protection: Standard failsafe DC power input and muting relay

This is the spot to discuss the new Schiit Magni 3+ …

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That is a ton of power for 100 bucks!

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Yep, more power than the Magni 3 it replaces, at least from 32 Ω and up, and it both sounds and measures better than the original Magni 3 to boot.

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Silly question time because I’m massively ignorant about the specifics here (sorry!): how efficient a pair of bookshelfs can you run off the new Magni 3+? I’m wondering how much tongue-in-cheek there was in the FAQs describing this as effectively a mini speaker amp.

I’ve been teetering on the edge of DIYing some mini bookshelf speakers for ages because it’s sometimes too hot for headphones but at the same time my room isn’t the best for speakers— not in terms of treatment but in terms of bothering the ever-lovin’ jeebus out of other people, haha. That said, it’d be cool to have something that’d work for the eventual speaker rig.

Don’t try and use Magni 3+ or Heresy as a speaker amp, it doesn’t have enough heat sinking to handle it.

There’s more to a speaker amp vs. a headphone amp than power rating and topology.

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Unless you like watching $99 amps explode, that is. In which case, enjoy the murderous speaker listening.

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I posted my full review, and comparison of the Magni 3+ and Heresy on the main site.

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I have a Magni 3+ being fed by a Modi 3 in my work for 2 months now. I use it everyday with 2 modest IEMs and my SRH1540.

Initially, I was driving a DT 770 PRO with it but after a few weeks of harshiness (this Beyers is too bright for me in some genres), I decided to replace by the SRH1540 which is way more neutral. Not to mention the comfort.

My settings:

  • Knob at 3 o’clock for the DT770 PRO;
  • Knob at 12 o’clock for the SRH1540;
  • Switch at low gain at all times;
  • Volume is controlled by the keyboard (Linux pulseaudio running KDE) – typically between 20% - 60% of overall DAC/OS volume.

What do I listen?

Youtube and Google Play Music.

So far, nothing to complaint.

I would be interested in knowing if someone is using the high gain switch on this amp, and why. Every time I engage it, songs become compressed to me. Personally I like to play with the dynamic range using the keyboard instead.

I never heard the noise floor on this thing. I’m impressed. :clap:

This is my first ever dedicated headphone amp. :heart_eyes:

When I first heard about the Magni 3+ I couldn’t believe the output power that it offers… blows some of the competition out of the water for sure

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A little (stupid) exercise I’ve done this morning with the Magni 3+: Off Topic: Funny Photos Edition

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I’m bored tonight. Measured the power consumption of my Magni 3+ with a Kill A Watt:

  • Turned on: ~6W – as given in the specs;
  • Turned off. Yes, turned off: ~3W. :man_facepalming:

Blame the cheap’o VAC transformer.

Other than that, very small power consumption. Small unit anyways.

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My Medium blog post on the Schiit Magni 3+ with Modi:


Not a review per se, but may be interesting reading for anyone looking at this amp.
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