Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Impressive clarity, especially in the midrange, enhances detail in the music
- Bass performance is focused and precise, adding detail and punch to the lower frequencies
- A wide and expansive soundstage creates a sense of space and separation between instruments
- The amp is small and light, but is a fully linear class AB amplifier with a transformer inside
- It offers neutral presentation
- Requires a preamplifier with volume control, as it is a power amplifier without a volume knob itself
- Banana plugs are required for speaker connections, spades are not compatible
- In monoblock configuration, a preamplifier with balanced outputs is required
Product Considerations
- Requires a preamplifier with volume control, as it is a power amplifier without a volume knob itself
- Banana plugs are required for speaker connections, spades are not compatible
- In monoblock configuration, a preamplifier with balanced outputs is required
- 10 watts might not be enough for all listening setups and all environments
- It is important to pair this amp with speakers with high efficiency rating
Comparisons (according to reviewers)
- Versus the Cambridge Audio 651A—the Gjallarhorn had a wider and cleaner soundstage, provided a bigger bass performance, and separated the instruments in a more efficient manner, thus enhancing the clarity
- Versus the Rega Brio-R—the Gjallarhorn had a wider and cleaner soundstage, provided a bigger bass performance, and separated the instruments in a more efficient manner, thus enhancing the clarity
- Versus the Fosi Audio BT20A Pro—the Gjallarhorn had a bit more space and instrument separation
- Versus the Schiit Vidar—the Vidar has a lot more power, which is not the Gjallarhorn's intent
- Versus the Schiit Rekkr—the Gjallarhorn outperforms the Rekkr (2 watts), and is designed for more powerful home set ups rather than desktops
Takeaway: The Gjallarhorn is a versatile amplifier that excels in near-field setups and can be transformed into a powerful monoblock system, delivering clarity and balanced sound. It is a great choice for those seeking a compact yet capable amplifier for smaller spaces or desktop use, especially when paired with efficient speakers.
All
Gjallarhorn
reviews

Manufacturer details
- Power Output: 10W RMS per channel (8 Ohms stereo), 15W RMS per channel (4 Ohms stereo), 30W RMS (8 ohms mono)
- Frequency Response: 20Hz-20Khz, +/-0.01db, 3Hz-500KHz, +/-3dB
- THD: <0.004%, 20Hz-20KHz, at 1V RMS into 8 ohms
- IMD: <0.005%, CCIR, at 1V RMS into 8 ohms
- SNR: >117dB, unweighted, referenced to full output
- Damping Factor: >100 into 8 ohms, 20-20kHz
- Gain: 10 (20dB)
- Input Impedance: 20k ohms SE, 40k ohms balanced
- Crosstalk: >80dB, 20-20kHz
- Power Consumption: 80W maximum
- Size: 9" x 6" x 2.5"
- Weight: 8 lbs
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Schiit Audio offers product modularity, allowing users to upgrade individual components like DAC and USB boards within their existing devices, extending product lifespan and enhancing performance over time.
- They directly challenge industry norms by releasing new versions of flagship products (like the Yggdrasil) at lower prices than existing models.
- The brand focuses on in-house design and manufacturing, keeping production and component sourcing largely within the US.
- Schiit is known for its idiosyncratic, humorous marketing and branding. This aims to counter hifi audio pretentiousness and appeal to a broader customer base.
Select products
Modi Plus:
- Positioning: The entry-level DAC, offering a budget-friendly option for those new to high-fidelity audio.
- Description: Features Schiit's Unison USB for superior connectivity. It stands out with its ESS ES9018 DAC chip, providing a clean and detailed sound that competes with more expensive models. Compared to the Modius, it lacks balanced outputs, making it more suitable for simpler setups or smaller spaces where budget is a priority.
Modius:
- Positioning: A step up from the Modi Plus, offering balanced outputs for enhanced audio performance.
- Description: Features balanced outputs and high performance, using the ESS ES9028 DAC chip and Schiit's Unison USB. It provides a more refined sound than the Modi Plus, with better soundstage and connectivity options.
Bifrost:
- Positioning: A mid-range DAC in Schiit's lineup, offering advanced features like True Multibit technology.
- Description: Uses True Multibit architecture, providing a rich and detailed sound that surpasses the Modius. It includes Schiit's proprietary digital filter, enhancing both time and frequency domains.
Gungnir 2:
- Positioning: A high-end DAC, offering advanced features and modular design for serious audiophiles.
- Description: Uses Schiit's Multiform architecture, providing exceptional sound quality with its balanced multibit design. It includes two USB inputs and the Forkbeard system for enhanced control and future-proofing. Compared to the Bifrost, it offers more connectivity and modularity.
Yggdrasil:
- Positioning: Schiit's flagship DAC, offering the pinnacle of audio performance and modularity.
- Description: Features True Multibit architecture and proprietary digital filter, delivering groundbreaking sound quality. It offers a fully modular design, allowing for future upgrades and customization. Compared to the Gungnir 2, it provides even greater precision and detail.
Our take on the brand
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Used
Schiit
What if you spend more?
Our summary
Product Strengths
- Half-width size is desirable for storage, as two units can fit side-by-side on a typical hifi shelf
- Strong dynamic profile, dimensionality, and power for most performance speakers on the market
- Bass is much more controlled, and leading edges are significantly more defined, compared to the previous version
- Vocals feel lifelike and tangible
- Possesses a nice overall tone and a well executed lack of dryness or 'thin' character
Product Considerations
- A single Aegir 2 box delivers audiophile fun with efficient setups, but shines best in a dual mono two amp situation
- The top of the unit does heat up slightly with use
- May not be the perfect choice for high demand electrostatics
- Requires a balanced connection from the pre amp to bring out the best from the setup
- Takes a little longer to boot up compared to the original Aegir
Comparisons (according to reviewers)
- Vs Schiit Vidar: The Aegir 2 has a sound that is more rich and thick, but still defined
- Vs Aegir G1 (original): The Aegir 2 has increased dynamics and low end control compared to the original
Takeaway: The Schiit Audio Aegir 2 is a fun power amplifier that offers a strong dynamic profile and nice overall tone. It brings dimensionality and sufficient power for most performance speakers, making it an enjoyable addition to any audiophile setup.
Video review
Our take on the brand
The MX-HPA’s technical performance is stunning. Typically, distortion from 20 Hz to 40 kHz is less than 0.005%. Signal-to-noise ratio is better than 120dB (‘A’ weighted). Frequency response is ruler flat from 10 Hz to 20 kHz (-0.1dB). The MX-HPA is capable of a short-term peak of 10 watts (for one cycle) and has two gain positions: 18dB (8X) and 24dB (15X). Inputs are either balanced or single-ended. The MX-HPA will automatically convert single-ended inputs to balanced. The MX-HPA is genuinely fully balanced from beginning to end.
Product Strengths
- Exceptional build quality with an elegant, minimalist aesthetic
- Fully balanced design
- Exceptional signal-to-noise ratio (>120dB 'A' weighted)
- Versatile because it automatically converts single-ended inputs to balanced signals
- Dual gain settings for versatility with virtually any headphone impedance
Product Considerations
- May be overkill for entry-level headphones
- The twin-XLR alternative is not the only means of balanced connection
Takeaway: The Musical Fidelity MX HPA is a remarkable piece of equipment that represents a significant achievement in balanced amplification design. It delivers a listening experience that is hard to surpass with technical excellence and practical versatility.
Video review
Our take on the brand
Our summary
Product Strengths
- Delivers a clean and detailed sound, allowing listeners to hear nuances in recordings
- Offers good instrument separation and imaging
- Has a low noise floor, creating a 'black background' and enhancing the listening experience
- Compact size for an A-B amplifier
- Does not have RCA inputs, requiring XLR or TRS balanced connections
Product Considerations
- May not have enough power for inefficient speakers or large rooms
- External power supply 'brick' is large
- No remote control
Comparisons (according to reviewers)
- The LA90 has a more neutral sound than Cambridge Audio AXA25, which is cleaner and more detailed
- The LA90 comes close to Benchmark AHB2's performance, but does not outperform it in bass impact and soundstage size, and the AHB2 also has more protection systems
- The LA90 offers more vocal clarity and fuller bottom end than Schiit Vidar, but the Vidar is more exciting on top
- Emotiva A1's have more power
Takeaway: The Topping LA-90 Discrete is a small amplifier that produces very clear sound with good detail, making it great for those who already have balanced audio equipment. It could be a nice upgrade for those seeking to hear all the subtleties in their music.
Video review
Our take on the brand
Product Strengths
- Impressive specs and measurements showcase extremely low noise and distortion
- Clean and transparent sound aims for a neutral reproduction of music
- Compact size and sleek design make it suitable for small spaces
- CNC machined aluminum chassis allows for maximum thermal flow to keep the unit running cool
Product Considerations
- Included external power supply is large and heavy, which can be a challenge to hide
- Power output may be limiting, especially with demanding speakers and for high dynamic range tracks
- Bass performance, while tight and controlled, may lack sub-bass extension and impact for some listeners
- Lack of a remote control limits its convenience as an integrated amplifier
Comparisons (according to reviewers)
- The Discrete version matches the Topping LA90 IC based unit's exemplary performance, but betters it in power handling
- The Topping LA90 comes close to the Benchmark AHB2 in noise floor and detail retrieval, but the AHB2 has more power, impactful bass, and a bigger soundstage
Takeaway: The Topping LA90 is a compact and technically proficient amplifier that delivers a clean and transparent sound and with impressive specs. It is best suited for those with efficient speakers and a preference for accurate sound reproduction without coloration.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Objectively an excellently performing amplifier with a discrete design and potentially lower noise floor than op-amp based designs
- Subjectively has a slightly bass-focused, full-bodied sound, with a focus on the texture of midrange elements, leading to a more natural vocal presentation
- Offers excellent value for money, competing with Far East manufacturers on both performance and pricing
- Has plenty of power to drive most headphones, including high impedance models
- Features both single-ended and balanced inputs/outputs and can be used as a preamplifier
Product Considerations
- The volume knob may have a scratchy feel
- The halo feedback design may not make a significant difference in terms of measured behavior of headphones
- Protection circuit may kick in and limit power at lower impedances
- Preamp outputs cannot be switched off when using headphones
Comparisons (according to reviewers)
- Vs Schiit Magni+, the Midgard offers better clarity and separation, especially when using the balanced output, but the tonal balance is similar
- Vs Schiit Asgard 3, the Midgard is more neutral and clarity-focused, while the Asgard 3 is warmer and richer, with a better sense of soundstage depth
- Vs Topping A30 Pro, the Midgard offers a resolution and finesse that the A30 Pro cannot reach—being more natural, open and fun
- Vs Schiit Jotunheim 2, both are similar in terms of overall sound quality, but the Midgard stands out because its midrange is stuff from legends
- The Midgard is a magnificent improvement compared to the Schiit Magnius
Takeaway: The Midgard is a powerful and versatile headphone amplifier with a balanced, full-bodied sound that is well-suited for many headphones. Its discrete design and excellent value make it a worthwhile upgrade for audiophiles.
Video review
Our take on the brand
Our Summary
Product Strengths
- Good sound quality, especially in the midrange, leads to vivid and well-formed vocals
- Versatile, it works well with both efficient headphones/IEMs and moderately powered speakers
- Compact design and good build quality, with the chassis acting as a heatsink
- Ability to roll op amps allows users to customize the sound signature
- Ample power for most headphones and nearfield speaker setups
- Only one RCA input, which may be limiting for some users
Product Considerations
- Speaker amplifier power (35-45W) might be insufficient for power-hungry speakers or larger rooms
- The base model op amps are sonically inferior to upgrade options
- Mild turn-off thump present
Comparisons (according to reviewers)
- The Funk has a narrower but deeper soundstage with better imaging and layering than the Arylic A08 Pro
- The Funk has superior imaging, but less potential power output depending on the Arylic's power supply than the Arylic A07/A08 Pro
- The Funk is preferred for desktop speaker setups with Vivid opamps when compared to Schiit Aegir
Takeaway: The Burson Funk is a solid choice for people wanting good sound from both their headphones and speakers in a single, convenient unit. The ability to change the sound by swapping op amps is a welcome feature for those who like to tinker and upgrade.
Video review
Our take on the brand
Our Summary
Product Strengths
- Great value for the money and an attractive price point
- Balanced input and single-ended RCA input
- Op amps are swappable
- Compact form factor
- Versatile with stereo and mono mode
Product Considerations
- The volume control was found to be touchy by some reviewers
- The included power brick is quite large, almost as big as the unit itself
- The binding posts are small
- The RCA input sounds inferior to the XLR input
- The amplifier does not high pass the mains when a subwoofer is plugged in
Comparisons (according to reviewers)
- Vs Fosi Audio V3: ZA3 is considered a more mature version with stylistic elements and new features like balanced inputs and mono mode, with a naturalness in the tonal quality
- Vs SMSL AO200 MKII: AO200 MKII delivers better clarity, definition, and resolution of the sound
Takeaway: The ZA3 is a versatile and compact amplifier that offers great value, especially for those starting their audio journey. Its ability to be used in both stereo and mono configurations and the option to upgrade components make it a flexible choice for various setups.
Video review
Our take on the brand
Our Summary
Product Strengths
- Excellent build quality, featuring a CNC milled aluminum chassis and durable construction
- Achromatic Audio Amplifier (AAA) technology by THX, aiming for transparent sound reproduction without coloration
- Relay volume control provides precise channel matching
- Plenty of power to drive a wide range of headphones, from sensitive IEMs to demanding planars
- Balanced XLR inputs and outputs
Product Considerations
- No pre-amp output
- The notched volume control might not be to everyone's liking
- Gets quite warm during use, especially with the SU-9 DAC stacked on top
- Some reviewers noticed a clicking noise when adjusting the volume
- The three-feet design may not be as stable as a four-feet design
Comparisons (according to reviewers)
- Vs. SMSL SP200: Better unit at repelling noise, with a higher signal-to-noise ratio and lower total harmonic distortion—completely solved the SP200's issue with not having a pitch-black background
- Vs. Benchmark HPA4: Very close to the HPA4 in performance, with some minor differences observed only with high-end headphones
Takeaway: The SMSL SH-9 is a well-built and powerful headphone amplifier with a clean, transparent sound. It is a good choice for audiophiles looking for an accurate and detailed listening experience.
Video review
Our take on the brand
Our Summary
Product Strengths
- Budget-friendly headphone amplifier focused on quality
- Robust all-aluminum exterior, with rigid toggle switches, and smooth volume control, giving it the same fit and finish as SMSL's higher-end HO200
- Delivers a clean, neutral, and transparent sound, faithfully reproducing the source audio without adding coloration
- Extremely low noise floor
- Versatile due to its three gain levels (low, mid, high) and its ability to drive both sensitive IEMs and harder-to-drive headphones
Product Considerations
- Lacks balanced and unbalanced outputs for connecting to powered speakers, functioning solely as a headphone amplifier
- Does not have preamp capability
- Reviewers have noted average microdetails
- While the design looks smart and subdued, the tempered glass panel easily grabs fingerprints, requiring frequent cleaning
Comparisons (according to reviewers)
- Vs SMSL HO200: HO100 lacks RCA/XLR outputs and has lower wattage, but is more compact and is preferred if the extra power and outputs are not needed
- Vs FiiO K5 PRO: It has better driving power, a lower noise floor with IEMs, and lower distortion at maximum volume
- Vs JDS Labs Atom+: It has higher maximum power, handles maximum volume better with lower distortion, and offers better overall detail in the micro detail, and a more relaxing signature
Takeaway: The SMSL HO100 is a compact yet powerful headphone amplifier that delivers clean, neutral sound suitable for various headphones. It is well-built and offers excellent value for audiophiles seeking a high-quality listening experience.
Video review
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