Krell FPB-300 Amplifier - Class A Powerhouse! 300W at 8 Ohms - 1200W at 2 Ohms

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If your speakers present a difficult load, this Krell "Full Power Balanced" amplifier is the answer. 

Capable of delivering clean high-current power in a class A configuration, and rated at 300W for 8 Ohms with up to 1200W at 2 Ohms.

Utilizes Krell's "Sustained Plateau II Bias Technology" to keeps things in check, and a fully balanced design from input to output which ensures the best stereo separation possible.  Since this amp is direct coupled (meaning there are no coupling capacitors in the signal path), careful consideration should be made when choosing and connecting a preamp.  Let us know what preamp you'll be using so we can make adjustments prior to shipping. 

Included is the original box as pictured, 20A power cord, and a printed manual.

This amplifier will ship via freight carrier secured to a shipping pallet to ensure safe transport. 

This amplifier has been fully tested in our lab and in our listening room.   Was serviced in Nov 2020 by Krell expert shop. 

Our Testing Process for Amplifiers at SkyFi Audio:

We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. 

We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.

Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage Kef speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Click here for a PDF copy of the FPB-300 Owner's Manual

"Full Power Balanced 300" Specifications:

Frequency Response:
20Hz - 20kHz +0.0, -0.05 dB
0.1 Hz - 240kHz +0.0,-3.0 dB

Gain:
26.4 dB

Distortion:
1 kHz 0.02%
20 kHz 0.15%

Input Sensitivity:
2.35 Vrm

Input Impedance:
100Kohm

Output Voltage:
Peak to Peak 170V
RMS 60V

Output Power, Each Channel Driven:
8 Ohms 300 W
4 Ohms 600 W
2 Ohms 1,200 W

Power Consumption:
Standby 75 W
Idle 350 W
Max. 3,000 W

Dimensions:
Inches - 19w x 10.2h x 19.9d
Centimeters - 48.3w x 25.9h x 50.5d

Weight:
Pounds - 110.0
Kilograms - 50.0

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.