Schiit Audio Freya+ (vintage matched tubes)

Freya + (plus) w/ upgraded tubes: 

• Original owner.  Less than 1 yr old.
• 1951 Sylvania 6SN7GT Black Plate "Bad Boy" (Rare, Legendary 6SN7 Tubes)  matched pair w/ approx. 20hrs on them - Cathode follower output stage.
• 1950's Sylvania 6SN7GT Staggered Black Plate "Bad Boy" (Super Rare) matched pair w/ approx. 20hrs on them - Differential voltage gain stage. 
• All 4 stock tubes = brand new, never used
• All original packaging, manuals, remotes, everything as it came new

https://www.schiit.com/products/freya-1

Compound Differential Buffer
Gain: 1 (0dB)
Frequency Response: 20Hz-20Khz, -0.2db, 3Hz-500KHz, -3dB
THD: <0.004%, 20Hz-20KHz, at 1V RMS 
IMD: <0.0055%, CCIR 
SNR: >120db, A-weighted, referenced to 2V RMS 
Output Impedance: 75 ohms SE, 600 ohms balanced
Topology: JFET differential amplifier compound pair with equalized-gm followers 
 
Tube Gain
Gain: 4 (12dB)
Frequency Response: 20Hz-20Khz, -0.2db, 3Hz-200KHz, -3dB 
THD: <0.01%, 20Hz-20KHz, at 1V RMS 
IMD: <0.01%, CCIR 
SNR: >115db, A-weighted, referenced to 2V RMS 
Output Impedance: 75 ohms SE, 600 ohms balanced
Topology: differential triode input with semi-circlotron follower stage
 
Input Impedance: 10K ohms
Crosstalk: >85dB, 20-20kHz
Inputs: 2 XLR pairs plus 3 RCA pairs, selectable via front switch or remote
Outputs: 1 XLR pair plus 2 RCA pairs, selectable via front switch or remote 
Volume Control: relay-switched stepped attenuator with discrete thin-film resistors, 128 0.625dB steps
Power Supply: One 48VA transformer with regulated 300V rail, plus 24VA transformer with regulated +/-18V rails, plus 6.3VDC tube heaters and regulated 5VDC for microprocessor 
Power Consumption: 40W typical
Size: 16” x 8” x 2” + tube height (about 2.5" more)
Weight: 11 lbs

Freya+ is a refinement of the original Freya, with higher performance, more features, and enhanced ease of use. But it’s still a true no-excuses, balanced, remote-control preamp. Switch between passive, differential buffer, and differential tube gain modes, enjoy the fine control of a 128-step relay-switched stepped attenuator volume control with perfect channel matching, and control it all from the comfort of your favorite chair.
 
Whisper-Silent Tube Stage—With Tube Shutdown
Now, you can enjoy a tube preamp without the hiss and hum of classic designs. Freya+’s all-new tube stage with new-production 6SN7 tubes, DC heaters and semi-circlotron, noise-cancelling output stage is whisper-silent. Better yet, it turns off when you’re not using it! That’s right, both the tube heater and high voltage rails go away when not in use, so you can preserve lifetime of costly tubes. 
 
Differential Buffer Stage—Versatile Interface
Freya+’s buffers aren’t just buffers—they’re differential. That means they convert single-ended signals to balanced, so you can interface more easily throughout your system. In addition, you can use it to convert SE sources to drive mono Vidars and Aegirs. 
 
Easiest 128-Step Relay-Switched Volume, Ever
The benefits of a relay-switched stepped attenuator for volume are clear. Compared to a potentiometer, they give you essentially perfect channel matching and near-unmeasurable distortion. However, some preamps with relay-stepped attenuators confuse you with buttons and screens. Not Freya+. Freya+ has a volume knob that works just like a volume knob—just grab and turn. And if you use the remote control, the motorized potentiometer changes to match the remote setting. 
 
Yes, Remote Control Included
When you’re talking about gear that doesn’t sit on your desktop (like our headphone amps), you need the convenience of remote control for volume, input switching, output switching, and muting. Freya+ includes a custom remote control, standard.
 
Perfect Companion to Our DACs
Want a remote-controlled system to interface your digital gear with the rest of your system? Stack Freya+ and Gungnir Multibit or Freya+ and Yggdrasil (or any other of our DACs) for a true no-compromise remote-controlled system.
 
Designed and Built in California
By “designed and built in California" this is what we mean: the vast majority of the total production cost of Freya+—chassis, boards, transformers, assembly, etc—goes to US companies manufacturing in the US. Our chassis are made minutes from our facility. Our PCBs are done just over the hill from us, or done in NorCal.