Schiit Folkvangr vs HiFiMAN EF600: Which Amp Fits Your Desk?

Two very different answers to the same question

The Schiit Folkvangr and HiFiMAN EF600 both drive headphones, but they start from opposite directions. The Folkvangr is a limited-production, 10-tube OTL/OCL amplifier with an impedance multiplier, built for listeners who want tubes and are willing to manage heat. The EF600 is a DAC and headphone amplifier tower with balanced inputs and outputs, Bluetooth and a chassis that doubles as a headphone stand.

That difference decides most of the buying question. If your system already has a DAC you like and your headphones are high-impedance, the Folkvangr is the more focused choice. If you need one box to take digital sources, accept balanced analog inputs and drive a range of headphones from a tidy desktop footprint, the EF600 covers more ground.

Connections and system role

• Folkvangr: amplifier only: The supplied record describes two inputs, low or high gain, and preamp outputs for building a system. It does not include a DAC, so you will need to supply one or use an analog source.
• EF600: DAC and amplifier in one: The EF600 is designed for use as a DAC or as an independent headphone amplifier. It includes fully balanced input/output connections, high-resolution Bluetooth and an independent power supply, so it can sit at the center of a digital and analog system.
• Balanced analog sources: The EF600's array of RCA and XLR inputs lets it act as a headphone amplifier for CD and SACD players through its balanced output. The Folkvangr's supplied information lists two inputs but does not specify their connector types, so confirm that detail before matching it to a balanced source.

What the EF600 brings to a desktop system

• HiFiMAN EF600 DAC & Amplifier: The EF600 includes fully balanced input/output connections, high-resolution Bluetooth connectivity, an independent power supply and a thermal optimized tower case. These features let it serve as the hub for digital and analog sources without adding separate boxes.

  

• HiFiMAN EF600 DAC & Amplifier: The industrial design also serves as a headphone stand, reducing desktop clutter. If desk space is tight, the EF600's footprint does two jobs instead of one.
• HiFiMAN EF600 DAC & Amplifier: An array of RCA and XLR inputs allows the EF600 to be used as a high-performance headphone amplifier fully compatible with most CD and SACD players, thanks to its balanced output. This is the practical advantage for listeners with disc players or balanced analog sources.

Headphone matching: impedance is the dividing line

The Folkvangr's supplied information is unusually direct about load matching. It states that tubes will never equal transistors with low-impedance loads, which is why Schiit added a switchable impedance multiplier. Switch it on and 32-ohm headphones look like 256 ohms to the amp, so you can use a wider variety of headphones.

That does not mean the Folkvangr is unsuitable for low-impedance headphones; it means the multiplier is the feature to use with them. For high-impedance headphones, the amp's OTL/OCL tube design is the intended starting point. The EF600's supplied record does not include headphone output impedance or a power-versus-load specification, so you cannot use the catalog alone to predict how it will behave with a particular pair. Treat that as a question to resolve with the retailer or a demo rather than a point in either amp's favor.

What the Folkvangr asks of you

• Schiit Audio Folkvangr Headphone Amplifier: Folkvangr is a limited-production, 10-tube OTL/OCL tube amp with an impedance multiplier. The tube count and limited production define both the ownership experience and the heat involved.

  

• Schiit Audio Folkvangr Headphone Amplifier: A switchable, integrated impedance multiplier makes low-impedance headphones look like high-impedance headphones; 32-ohm headphones look like 256 ohms to the amp. This is the feature that broadens the range of headphones you can reasonably use.
• Schiit Audio Folkvangr Headphone Amplifier: With Folkvangr, headphones are connected directly to eight 6N6P output tubes, with nothing in between, and an 8-servo DC stabilization system with DC sensing and relay protection is included. The direct-coupled design is the core of the amp's appeal, and the protection system is the supplied answer to headphone safety concerns.
• Schiit Audio Folkvangr Headphone Amplifier: The 6N1P input tubes can be rolled for 6922, ECC88 and many other tube types; there are low or high gain settings, two inputs and preamp outputs. Tube rolling and gain switching give the Folkvangr a long ownership arc, but they also add decisions the EF600 does not require.

Heat, space and daily use

Schiit's own description of the Folkvangr asks whether you are 'a bit crazy and heat-tolerant.' That is a fair warning rather than a marketing flourish: ten tubes in an OTL/OCL design generate heat, and the amp needs ventilation around it. The supplied record does not give a power consumption figure or a minimum clearance, so plan for open space and do not enclose it in a cabinet.

The EF600 takes the opposite approach with a thermal optimized tower case and an independent power supply. Its vertical format and built-in headphone stand suit a desk where the amplifier is also the place you hang your headphones. Neither product's supplied information includes dimensions or weight, so measure your shelf or desk before ordering either one.

Which one fits your system

• Choose the Folkvangr if: You already have a DAC or analog source, you want a tube amplifier with directly coupled output tubes, and you are prepared for heat and tube rolling. Its impedance multiplier makes low-impedance headphones usable, but the amp is at its most natural with high-impedance loads.
• Choose the EF600 if: You want one component to handle digital and analog sources, including Bluetooth and balanced XLR inputs, and you value a compact tower that doubles as a headphone stand. Its DAC and amplifier sections are designed to work together or separately.
• Look elsewhere if: You need a confirmed power rating into a specific load, published dimensions, or a specified headphone output impedance. Neither supplied record provides those figures, so a demo or a direct question to the retailer is the honest next step.

The trade-off in plain terms

The Folkvangr is a specialist amplifier: tubes, heat, limited production and a design that expects you to match headphones and sources deliberately. The EF600 is a system hub: DAC, Bluetooth, balanced connections and a desk-friendly tower. Neither is the 'better' high-end headphone amplifier in isolation; the right choice depends on whether you are building around a tube amp or simplifying your source chain.

One honest limitation applies to both: the supplied catalog information does not include measured output power, distortion under load or headphone output impedance for the EF600, and it does not include dimensions or heat output for the Folkvangr. Use the supplied facts to narrow the decision, then confirm the missing numbers before you commit.