The Ampeg Portaflex PF500 bass head brings you 500 watts of low-end power, in an exceptionally compact and lightweight unit. It employs Ampeg's extensively developed and much lauded MOSFET solid state preamp. This gives you an amp with a super-clear clean tone, packing plenty of punch and power.
Check out our exclusive run-down of the Ampeg Portaflex PF500 Bass Amplifier Head:
Input and Outputs
Your Portaflex PF500 is a single-input design with a Mute and a -15 dB pad switch right next to the 1/4-inch input jack. The amp boasts both a single 1/4-inch and a SpeakON-style output for running to the cabinet of your choice. It pairs stylishly with the many fine bass cabinets in the Ampeg line (like the PF-115HLF or PF-210HLF), but will serve any suitably-sized cabinet with an minimum impedance of 4 ohms.
Lots of Ways to Play With Your Tone
You'll find a wide range of tonal control on the Portaflex PF500. To start, you've got classic Bass and Treble knobs to make sure the lows and highs of your tone are where you want them. Then you can really start getting into the intricacies of tone using the 5-position midrange control to craft the real "voice" of your bass sound. An Ultra Lo switch is there when you want to add more thud to the mix. The Ultra Hi switch is perfect when you need to drop a bass solo that will cut through the rest of the mix. You can also use the integrated Compressor to achieve still tighter and cleaner tones when you're raging at high volumes.
Awesome Features Throughout
A number of useful features make the Ampeg Portaflex PF500 a great amp for gigging musicians. There is an FX Loop Send and Return. You'll also find a Power Amp input and a Pre-Amp Output. The balanced XLR Direct Out on the rear panel runs easily to live mixers or recording consoles with a switchable -40 dB pad, and even features a pre-/post-FX loop switch! A thoughtfully included Tuner Out allows you to tune silently and quickly via a direct bass-to-amp 1/4-inch line. Finally, you've got a Ground Lift switch to eliminate ground noise when it arises.
Even More Control with an Optional Footswitch
The Portaflex PF500 also has a 1/4-inch TRS footswitch input that allows you to connect an Ampeg AFP2 (not included) or any other dual TRS footswitch to control the Mute and FX On/Off control.
- 500-watt MOSFET Preamp
- Class D power amp
- 1/4-inch and a Speakon-style outputs
- 3-way Bass/Mids/Treble
- 5-position Mid-tone control
- Ultra Lo/Ultra Hi boost switches
- Ground lift switch
- FX loop with footswitchable control
- XLR Direct Out with -40dB pad switch
- Power amp input
- Preamp output
- 1/8-inch headphone output / Line in
- -15 dB input pad switch
- Mute with footswitchable control
- TRS footswitch output