Enter to Win a $8000 PA System!

Ampeg PF-50T Portaflex - 50-watt All-tube Bass Head

50-watt Tube Bass Amp Head with Normal and Padded Inputs, 3-band EQ, Selectable Mid Control, Ultra Hi/Lo Boosts, Line-out, and User Adjustable Bias
$999.99

Earn $50 back in Bonus Bucks OR pay $21/month with 48 month financing*

$50 Earn $50.00 back in Bonus Bucks on this purchase when you use your Sweetwater Credit Card without financing. Select your offer in checkout. Terms

OR
48 months
Special FinancingEnds Apr 2, 2024

As low as $21/month with 48 month financing*

See all payment options
In Stock!

Only 4 left in stock! More on the way.
Add to Cart
Notify me about deals

Ask An Expert

Our expertly trained Sales Engineers are ready to help!

What is a Sales Engineer?
Sweetwater Gear Exchange

Have one to sell?
Check out Sweetwater's Gear Exchange!
Learn More

Most Popular Accessories & Related Items

Ampeg PF-50T Portaflex - 50-watt All-tube Bass Head
In Stock!
$999.99
Add to Cart
Add to list
Back to navigation

This article was Written By

Our Product Research Team

Get to know them!

Classic Ampeg Tube Tone

The PF-50T Portaflex 50-watt bass amplifier head puts the iconic tones of all-tube Ampeg amplifiers in a compact package, ideal for rehearsal, small gigs, and recording. You'll find 12AU7 and 6L6 tubes powering the amplifier, which conjures the warm tube sound associated with vintage Ampeg along with a pair of 12AX7 tubes in the preamp section. Weighing in at 19.4 lbs., the small size and light weight make transporting the PF-50T a piece of cake. And since it doesn't require a speaker load to run, this amp easily gets those tube tones on your recorded tracks without having a cab connected. Get vintage Ampeg tube tone in a lightweight package with the PF-50T.

Ampeg PF-50T Portaflex 50-watt Tube Bass Amplifier Head at a Glance:
  • All-tube Ampeg tone
  • Huge sound, convenient size
  • A great recording tool for players of all styles
All-tube Ampeg tone

Inside the power section of the PF-50T Portaflex bass head, you'll find a set of glowing 6L6 and 12AU7 tubes. Add to that dual 12AX7s in the preamp section and the all-tube design of this amplifier allows you to get that warm, harmonically rich tone Ampeg is known for, or push it hard to get an overdriven tube growl. So whether your ideal Ampeg tone is bringing Motown thump, or grabbing a pick and punching the front end of your amplifier as hard as you can, you'll fall in love with the tones in the Ampeg PF-50T Portaflex.

Huge sound, convenient size

Even with the diminutive size of the PF-50T Portaflex amp, you have all you need for getting huge tones through your cabinet, on your tracks, or both at the same time. The straightforward front panel makes dialing in your tones a snap, while the back panel offers XLR outputs for preamp out (with pre/post EQ switch) and transformer-balanced line-out. Its smaller footprint is easy to transport, and it sits beautifully on a recording desk or affixes to current Ampeg Flip-top cabinets. And the whole tube package is less than 20 lbs.

A great recording tool for players of all styles

One of the most useful features about the PF-50T Portaflex bass amp is its ability to run without a speaker load. Combining this with the preamp out (with pre/post EQ switch) and transformer-balanced line-out, you can optimize the PF-50T as a desktop unit for running direct and send your tube tone straight to your recording rig. The versatile EQ offers Bass, Mid, Treble with five different frequencies for the mid boost/cut: 200, 400, 800, 1.6 kHz, 3 kHz. The smaller size allows it to sit right on your studio desk within easy reach, and the black metal casing and glowing tubes look cool and classy.

Ampeg PF-50T Portaflex 50-watt Tube Bass Amplifier Head Features:
  • 50-watt tube bass amplifier head for small performance or recording
  • 6L6 and 12AU7 tubes offer classic Ampeg tone
  • Affixes to current Ampeg Flip-top cabinets
  • Compact footprint makes transportation easy
  • Features for direct recording
  • User adjustable bias control
  • Classic Ampeg front-panel controls
Get Ampeg's tube tone the easy way with the PF-50T Portaflex amplifier.

Additional Media

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Free 2-year Warranty

Sweetwater's 2-year Total Confidence Coverage™ Warranty gives you extra peace of mind at no extra cost.

Learn More about Total Confidence Coverage
Tools Icon

Save money with free parts & labor!

Fast Icon

Get back to making music with the industry's fastest turnaround time.

Award Icon

Fix it the first time with our award-winning, factory-certified Service Department.

Back to navigation

Tech Specs

  • Type: Tube
  • Number of Channels: 1
  • Total Power: 50 Watts
  • EQ: 3-band, Mid Selector, Ultra Hi/Lo Boosts
  • Preamp Tubes: 2 x 12AX7
  • Power Tubes: 2 x 6L6, 1 x 12AU7
  • Inputs: 2 x 1/4"
  • Outputs: 1 x 1/4" (speaker), 2 x XLR (preamp, line)
  • Power Source: Standard IEC AC cable
  • Height: 7.3"
  • Width: 13.9"
  • Depth: 10.4"
  • Weight: 19.4 lbs.
  • Manufacturer Part Number: 99-026-1005

What Makes Our Sales Engineers Great?

Sweetwater Sales Engineers are a world-class team of experts dedicated to you. Hand selected from across the globe, each brings a wealth of experience and expertise in the world of music gear to provide you with unparalleled service completely free of charge. Friendly relationships, real trust, and the right gear are only a call or a click away!

Back to navigation

Customer Reviews

Write your review
Rated 5/5

All tube all you've heard.

Man ,I love this amp along with the pf 115 lf cab. It'll shake anything loose at half gain lol. Randy Poteet is the Sales Engineer to top. Always done me right. Thanks again from your Cajun friend.
Rated 5/5

Ampeg PF-50T and Mesa Boogie Subway SW115 Bass Cab

Ampeg PF-50T
Mesa Boogie Subway SW115 Bass Cab
Focusrite 4i4
Aurelex SubDude

This rig performs as intended as a professional all tube studio and recording amp as well as a light band amp. Set on an Aurelex SubDude it dampens any sympathetic vibrations through the floor. I consider it an essential part of the kit.

I run DI from an XLR preamp out to a Focusrite 4i4. With passive Fenders it delivers the sounds of the analog 60s. The PF-50T is also pedal friendly for your favorite effects and tuner.

Recommended highly.
Rated 5/5

Most Excellent

I just got the PF-50T yesterday, and while waiting for my Portaflex cabinet, I plugged it into my Fender Pro 1x15 NEO cabinet (expensive) ... I can't say how great this amp is. Loud! LOUD!

I love it and the tone is incredible!

Get one!
Music background: Pro bass and guitar ... 60 years!
Rated 5/5

B15 on steroids

I've been using Ampeg for 53 years and this is the best yet. Clean and quiet electronics, warm, punchy, and plenty of power. I pair it with a RevSound single 15" neo cab. Works fantastic w/ my basses of choice ; fender P bass w/ labella flats or my upright bass w/ spirocore weich. Build QC of mine is outstanding.
Music background: pro 53 years at the bottom
Rated 5/5

YES; It Is Loud Enough

I've seen many people question if this amp is loud enough to play with a drummer, a band, or gig with - my answer is YES. I've been playing bar gigs with a 5 piece band, and this amp has no problem keeping up (1x15 cab). I don't have to max out the volume either.

Once you get above stage/club volumes, you have excellent output routing if you want to connect to the house system, or even run this into an external power amp (seems less common these days).

Yes, the tone is also fantastic. You can read about that in another review.

The original Ampeg B15 was only rated around 30 watts, and was a common club amp in past decades. The PF50T is rated at 50-watts and stays extremely clean. I have no problems being heard with this amp.

Hear from a Sales Engineer

What Do Our In-house Gear Experts Think?

Nick Church

As a bass player for more than 40 years, I was keen to see how the PF-50T compared to my all-time favorite bass head, the Ampeg V-4B. The PF-50T's front-end is like an SVT, and familiar controls such as Ultra-Hi and Lo buttons and a 5-way rotary-switched mid-range allowing me to quickly dial in a wide range of tone. I particularly like the addition of two DI outputs (one pre- and one post-EQ), which are useful for cab-less recording or running direct onstage in the praise band. I've found the PF-50T powerful enough for small to medium gigs, and the dual-input tone stack handles passive and active basses, without compromise. I was even more impressed with its versatility, which lets me boost the front end and dial back the mids and highs for a warm B15 sound, push the mids and treble and get a V-4B sound, crank the gain with full mids and highs and make it bark like an SVT. It's just the kind of amp a flexible bass player like me needs.
Close Close $8,000 PA System Giveaway -- input your email address below to enter or click here to learn more.

See giveaway details & rules or check out our past winners!

Success!

Your email, test has been entered to win this giveaway. Good Luck!