PS Audio 250 Delta with Cullen upgrade

PS Audio 250 Delta Amplifier with Cullen upgrades

These amplifiers have exceptional bass performance. The Cullen upgrades enhanced midrange clarity. These are fast amplifiers with a slightly closed overall sound.

Condition: External 8/10 (a few small cosmetic blemishes). Internal 9/10 (Cullen upgrades/service 2010). In storage since 2011.

Includes: Cullen Upgrade ($1,038.11) and ModSquad Feet ($103.61)

Excludes: factory power cords

Additional Items: Inquire separately, (2) Premier Amplifier Stands R-10 and (2) PerfectWave AC5 Power Cables.

Description: Monoblock Power Amplifier

PS Audio Specifications

• 250 Watts into 8 Ohms / 400 Watts into 4 Ohms

• THD at rated output, 8 Ohms: less than 0.1% (0.02% after upgrade)

• Open Loop THD, 8 Ohms: less than 0.2%

• IM distortion: less than 0.1% (0.02% after upgrade)

• Slew Rate: 150V / microsecond

• Input impedance is 30,000 Ohms

• Overall Negative Feedback: 9db

• Direct coupled -no coupling capacitors at either input or output

• Matched JFETs at input & high speed 30 MHz bipolars at output

• Unique loading technique to limit open loop gain

• Closed loop feedback only 9 dB

• Distortion well under 0.1%

• 12 separate 10,000 uFd capacitors are employed in each monoblock chassis (a total therefore of 24 separate capacitors)

• Large supply and massive energy storage

• Almost limitless dynamic range & bass extension

• Designed by Dr. Bob Odell

• 17"W x 17 5/8" D x 6"H; 45 lbs each

  
  

  Serial Number: GA-1736 and GA-1755

  
  

  Note: Shipping Estimate should be for TWO boxes at 46 pounds each. Two factory shipping containers will be supplied, each one contains a double-cardboard box with fully foamed inside.