Bellari PA550 Preamp


  • Gain: Line 16.4 dB gain @ 1kHz Phono 56.6 dB gain @ 1kHz
  • Input Impedance: 22k line and 47k
  • Phono Output Impedance: 8 to 600 ohms Headphone,47 ohms RCA
  • Frequency Response: 3Hz to 36kHz
  • Equalization: RIAA +/- 1 dB, 14Hz to 23kHz
  • THD: .005% @ 1KHz
  • S/N Ratio: >94 dB unweighted
  • PWR: 15 VDC
  • Size: 5.5″w x 3.5″d x 1.25″h
  • Weight: .8 lbs
  • Indicator: 1 Power LED
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PA550 Preamp

The PA550 is a sleeper. Its smaller compact design may lead you to believe that it is just another preamp… but…

IT IS A MONSTER. It has so much gain potential that it will drive any amplifier made with ease.  And not even break a sweat.


The amount of headroom available in the PA550 can only be rivaled by pre’s that cost enough to drain anyone’s bank account.

The Bellari PA550 Preamp tone is full bodied.  Frequencies are all covered.  The sound is clear. It never gives you the impression that it is making the treble too shimmery. Bass response is full.

This is an all american, bold, strait-forward approach to reproducing your music.

The phono input has a lot of surprising overtones that will truly bring your vinyl to the next level. The design can use either Moving Magnet or High output Moving Coil carts.

The most surprising feature of the PA550 Preamp is when you plug your phone into it. Yes, we know the over-compressed formats phones have don’t ever qualify to be called “high end”.  Or dare I use the word “audiophile”.  But, for us, sometimes you just need the convenience of plugging your phone in and streaming something! This is truly where the 550 makes its living. The improvement of substandard formats is what the PA550 Preamp will be know for. Plug your phone into the 1/8″ on the front panel, adjust the tone controls, and away you go.

YES, tone controls, the purist’s worst nightmare… the audiophile’s reason for not even acknowledging a piece of equipment. The reality is that when reproducing some music you need to boost the treble a bit or pump up the bass. Sure, you could sell your current speakers and buy some that cost a lot more OR you could just adjust the controls to your liking, and bring your listening experience to a higher level.

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