"Hi-End, Not High Priced"

In-stock now. Immediate shipping. 

This MKII version of the best-selling Grant Fidelity B-283 tube processor uses 6SN7 tubes which are commonly used on high end tube audio only.

Compared to the 6J1 version, it offers you more refined sound and works better with mid or high price range solid state system, plus you have endless list of 6SN7 current production and NOS tubes to roll for different sound.  If you have a budget sub $2,500 or vintage style system (equivalent values, speakers, amp, source CD player) , the original B283 would be sufficient. If you would like to explore more about tube hi-fi and tube rolling, the B283 MKII is a perfect small investment for you to venture into tube audio and learn all about tube rolling. 

• Solid State CD Player Processing. Simply patch your CD Player thru the B-283 MKII and into your amplifier/receiver for warming up and correcting what some call the digital harshness of CD's.
•  Home Theatre / DVD Player Processing. Initially installing on the 'front L&R' outputs of your DVD Player will improve the sound of your main speakers, especially with music DVD's. Another B-283 MKII can be added for the Centre and Sub channels for a clearer Centre channel and a warmer solid bass for your Sub-woofer.
•  Pre-Amp Processing. Simply patch your pre-amp output thru the B-283 MKII to your amplifier and all of your sources (CD Player, DVD Player, Turntable, Tuner etc) will enjoy the musical benefits of tube processing. This can also be achieved on most good stereo / home theatre receivers / amplifiers by patching the B-283 MKII thru their pre-ins and pre-outs. Note that when running the B-283 MKII between a pre amd power amp you need to have properly grounded home wiring. Improper gorunding will cause the B-283 MKII to introduce hum into your system. When using the B-283 MKII after a pre-amp you need to have sufficient gain from the pre to drive the B-283, suggested you have volume control on your amp.
• MP3 / iPod Players which compress the musical information, especially harmonics to achieve small file size. The B-283 MKII can recreate the missing important even order harmonic information from MP3 files, enchancing the musicality of the files and again adding the general benefits of Tube Processing to the overall sound.
• Guitar, Bass and Keyboard Players. Adding the B-283 MKII to your rig is bringing big smiles to everyones' ears. Many of us have gone solid state 'digital' setups for the convenience of access to great presets and reduced weight/price. The B-283 MKII gives you most of the benefits of a tube amplifier in a simple solution. A common comment has been reduced on-stage volume wars. For keyboard players emulating real instruments be prepared to have your emulations actually sound real with the B-283 MKII. Guitarists with tube amps, get your tone at a much reduced volume, everyone will love you again. 
• Pro-Audio/Recording. A true 'Magic Box' that can become in important part of almost ever step of your music production process. We have all had a tool we always reach for and can't live without in the studio. The B-283 is such a tool you should definitely have.
• Computer Musicians. One obvious way to use is to connect the B-283 MKII to your Soundcard's main outputs for adding instant musicality to your digital work. Another is in your in/out loops for individual track(s) processing. My softsynth Reality is even better sounding with the B-283  MKII and Reality scored a perfect 5 out of 5 for sound quality in every review!

If you've read this far you are probably asking so whats the benefit of adding the B-283 to my system. Here are some:

• While the jury will always be out on which is better in the audiophile world, it is always agreed that tube audio is warmer and usually more musical. Solid state was cheaper for more power for many years, but now with Grant Fidelity, tube power is much more affordable and solid state that compares to Grant Fidelity tube audio now costs much more. The cycle has reversed. But hey, we have spent good money on our solid state gear and just want to add tube warmth, natural presence and soundstage (the illusion of your speakers disappearing from your room). This is where the B-283 MKII benefits us, with solid state 'digital' equipment.
• The B-283 MKII adds/restores natural harmonics that livens up your music.
• The B-283 MKII adds tube warmth to digital audio.
• The B-283 MKII reduces the work load of your amplifiers and allows them to breathe, creating the perception of more power as tube processed music's distortion at high levels is much easier on the ears.
• The B-283 MKII makes your speakers sound much more detailed as the tube processing gives the speakers more of the music information they expect.
• Soundstage. An audiophile term about the 'space of the music'. Width, depth and height are all increased with the B-283 MKII . 

Who the B-283 MKII isn't for:

Audiophiles with a $20k plus audio system. You have already paid good money for what the B-283 MKII will do for lesser systems. Our tests have indicated that on true audiophile systems the results are very subtle to be noticeable, which is actually a good indication of how good the B-283 MKII is. If you are an audiophile and want great tube sound, check out our Grant Fidelity tube amps.

Specifications: 

• Input Sensitivity: -0.68dB (1kHz)
• Frequency Response Range: 10Hz-100kHz (-0.1dB)
• THD: <=0.03% (1kHz)
• Input Impedance: 100k ohm
• S/N Ratio: >= 60dB (A)
• Tubes: (2) Shuguang 6N8P (equivalent 6SN7)
• Weight: 3kg 
• Fuse: for using with 220V - 0.25A/250V; for using with 110V - 0.5A/250V

Caution:

The B-283 MKII is designed to be used Grounded, do not lift the Ground on the B-283 MKII or any of our products without running the ground to a proper ground point. Running any electrical device with the ground lifted is dangerous to both your health and equipment.

Dual voltage available (110V / 220V +/- 10% ) for use in both North America and Europe. The unit is preset at factory for use with 110V. Please check the voltage before you power it on.