Schiit
Schiit Buf Coherence™ Tube Buffer Preamp
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Highlights
- Featuring our unique Coherence output stage, Buf maintains absolute phase while providing a lush, harmonically rich tube sound that transforms cold digital audio into a warm, engaging experience.
- Buf gives you the flexibility of added gain if your system needs a boost. It runs a serious 100V on the tube plates with a 100% linear power supply. No noisy switching power supplies or op-amps—just pure, high-voltage tube sonics.
- Ships with a premium NOS 6N1P vacuum tube and rollable with popular 6922, ECC88, and 6DJ8 tubes.
- The super-small footprint fits great on any desktop or equipment rack. When you don't want tube sound, simply turn off Buf to return to your original signal path.
- Designed and built in the USA. 115VAC. USA Plug. Suitable for use in the United States, Canada, and Mexico. Will not work in 220 – 240V countries.
Why You'll Love It
- Adds warm tube harmonics to digital audio while preserving original signal phase
- Provides switchable extra gain to boost audio setups that need more output level
- Uses a 100-volt linear power supply and avoids op-amps for cleaner tube audio
- Includes a 6N1P tube and supports swapping to 6922, ECC88, or 6DJ8 tubes
- Bypasses tube processing instantly when powered off to return to your original sound
- Compact chassis fits easily onto crowded desks or component audio racks
Pros
- +Compact desktop footprint
- +True bypass when switched off
- +Supports multiple replacement tube types
- +Linear 100V power supply design
- +Made in the USA
Cons
- -Not compatible with 220-240V power
- -Limited to North American voltage outlets
Detailed Review
The Schiit Buf Coherence Tube Buffer Preamp introduces analog warmth to digital audio setups without altering absolute signal phase. Designed for desktop listeners and stereo owners alike, it bridges the gap between clean digital sources and the rich harmonic qualities of vacuum tubes. It also provides extra gain when your audio chain needs a boost in output.
Internally, the device runs a dedicated 100V linear power supply to feed its tube stage properly. It completely avoids switching power supplies and operational amplifiers, keeping the audio path focused purely on high-voltage tube processing. The unit ships with an NOS 6N1P tube installed, but tube enthusiasts can also roll in alternative options like 6922, ECC88, or 6DJ8 tubes.
Its compact form factor makes placement simple on crowded desks or inside audio racks. Whenever you want an uncolored signal, simply turning the power switch off restores your original, unbuffered sound path without requiring you to unplug cables.
The main limitation lies in its power requirements. Designed and built in the USA, it uses a 115VAC configuration with a standard USA plug, making it suitable strictly for 115V regions like the United States, Canada, and Mexico. It will not work in countries using 220 to 240V power systems.
Verdict: The Schiit Buf Coherence is an ideal pick for listeners in North America looking to add smooth tube warmth and optional gain to their audio chain. It delivers flexible tube rolling and a compact footprint with straightforward bypass functionality.
Specifications
- Included Tube: NOS 6N1P
- Compatible Tubes: 6922, ECC88, 6DJ8
- Plate Voltage: 100V
- Power Supply: 100% linear
- Power Input: 115VAC (USA plug)
- Country of Origin: Designed and built in the USA
Who Should Buy It
A great fit if you:
- Want to add warm tube sound to cold digital audio signals.
- Need optional gain to boost low-level audio gear.
- Enjoy experimenting with tube rolling using 6922, ECC88, or 6DJ8 tubes.
- Have limited desk or equipment rack space.
Consider something else if you:
- Live in a country that uses 220 to 240V electrical outlets.
- Prefer an audio path that utilizes operational amplifiers.
FAQ
What vacuum tubes can I use with this buffer?
It ships with a NOS 6N1P tube and is also compatible with 6922, ECC88, and 6DJ8 vacuum tubes.
What happens when the unit is powered off?
Turning off the power bypasses the tube processing and returns your audio to the original signal path.
Can this be used outside North America?
It is designed for 115VAC with a USA plug for use in the United States, Canada, and Mexico. It will not work on 220 to 240V power systems.
Product Details
| Brand | Schiit |
| ASIN | B0GYQDVDDB |
