(856) 292-3194
Cart | Wishlist | User Profile

SECURE SHOPPING Our site is tested by TWO services every day to protect your information.

McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams


We are an authorized retailer for everything we sell - we do not use unathorized or "shady" sources.

Pickups for Upright BassPickups

K&K Sound Bass Max Upright Bass Pickup

         Manufactured by: K&K Sound

Continental US - larger items may carry a partial shipping charge to AK, HI and PR
You've got options! Click the drop-down to choose (prices starting at $119.00)
Choose Options:

This Item SHIPS FOR FREE in the USA!
(Note that larger items may carry a partial shipping charge to AK, HI and PR.)
     Outside the USA? Log in, or add this item to your cart to see actual shipping costs to your state or country.
     (You can easily remove it if you change your mind.)

California Residents: Please view our Proposition 65 Message

Bass Max
Double Bass Pickup

Package Available:

Add a Preamp and FREE Mounting Kit!

Our special package includes the Bass Max and adds the Pure Preamp, which is a tiny, battery powered unit that is a perfect match to the K&K Pickups. Impedance buffering helps provide a more tonally balanced sound, and its powerful 3-band EQ has bass (120hz) and treble (8kHz) controls, as well as a 2.5 octave midrange control centered at 2500hz. This very clean circuit has an internal input volume (gain) control for 1x to 10x preamplification, and the main volume control is on a big knob for easy access. Just a tiny bit over 8 ounces with battery.

Our mounting kit includes a quality 12" cable with right angle connectors, a piece of vibration-isolating foam, a hook & loop strap, and illustrated instructions for quickly (and NON-PERMANENTLY) mounting the Preamp to the rear surface of your tailpiece, putting the controls right where you can reach them - and making for a very clean, inconspicuous installation. Hundreds of bassists worldwide use this simple, effective setup.
The Bass Max is a compact unit designed to be wedged into the wing in the side of your bridge. K&K advises that they feel that one sandwiched unit is better than a pair, with one in each wing of the bass, to avoid potential out-of-phase problems. It has two piezo elements in this single rubber jacket, sandwiched top and bottom, with material in between, so it senses the activity from both the top and bottom of the bridge.

The Bass Max is my most popular pickup, and rightfully so. It sounds great, with a full range response and is especially good for situations where you'd need to temporarily mount or switch the pickup between basses (a 30 second job). For the many different styles I play, I have come to prefer the Bass Max's versatile character; though the Double Big Twin (also from K&K) is absolutely wonderful for those who specialize in straight-ahead jazz.

Compared to the Double Big Twin, the Bass Max is very clean, with the string sounds not quite as "defined" -- and that's not a bad thing, but a different one -- it is still crystal clear, just not as 'stringy.' This pickup also has the same warmth, and that is generally unusual for piezos. It also has a smoother arco response than the DBT -- more bridge than string sound, since there is more wood between it and where the strings meet the bridge. Electric bassists could draw the comparison of a bridge pickup as opposed one placed at a midpoint (not the neck position). However, unlike some other pickups, it is not muddy or dark, and produces plenty of highs -- you can get some hand, string, and slapping sounds, too, unless you eq them out.

If you lean towards bluegrass or rockabilly, or want a slightly thicker, more mid-rangy sound, I'd go with a Bass Max -- especially if you switch to arco a good deal. The Double Big Twin has a more "scooped", hi-fi style of sound (which I sometimes preferred for jazz on the Juzek), where the Bass Max had more midrange and a little less string.

Will it fit your bridge? Bridges are not uniform, and many require slight alterations to accommodate any pickup. I use a file or piece of sandpaper wrapped around a slim slice of wood to remove just enough wood to make it fit. If the bridge wing is too wide, a small piece of wood can be used as a shim. Instructions are included with the pickups as well as my own tips and hints on installation and use, it's no challenge to fit it.

If you've ever had your hands on Ampeg Baby Bass reissue (and most other Azola made electric upright basses), take note of the Bass Max pickup that is inserted in the side of the bridge -- K&K made it for them.

If your application calls for what this unit has to offer, have more than one bass and don't want to buy a pickup for each one, or you don't want to glue anything to your bridge, I heartily recommend it. Please consider that if your bridge is shorter than the usual style 3/4 size bridge, such as the type that has very long legs and a short top section, the Bass Max may not be the best choice. If there is a very short distance from the top to the bridge wing, there may be insufficient wood for the strings' sound to diffuse, and the sound of the two closest strings may be louder than the other pair.

Do you Want a DOUBLE Bass Max?
You're probably looking at the pickup in the photos above and thinking, "If the pickup is only on one side of the bridge, won't it give me unbalanced sound? Won't the strings on the side where the pickup is installed be louder?"

The good news is, probably not. On most basses, especially if you have a good quality (or better) bridge, the vibrations from all four strings are pretty fairly equal by the time they reach the bridge wing. Very few people complain of unbalanced sound from their strings. So you really probably don't need to spend extra money putting an element in each side of the bridge.

But don't let that stop you if you really want to. After some pickup systems were custom-created from separate components, systems using a pair of Bass Max pickups - with one out of phase from the other - became popular among some users. As a result, occasionally I have special-ordered several "Double Bass Max" systems for users. This system is similar to the Bass Master Pro, but a second out-of-phase Bass Max replaces the Double Big Twin transducer; it is out of phase in order to avoid the phase cancellation that could occur.

The Double Bass Max System Includes two specially built Bass Max transducers wired to a stereo endpin jack, a stereo (TRS) cable, and two channel preamplifier with volume, overall gain, tone controls for each channel, and mixed output. The Pickup Only version has the pair of pickups wired to a single TRS jack. I can also have the pickups wired IN phase, or have both pickups wired to a standard mono connection, at your request. Simply make any special requests in the shopping cart at checkout (there's a comments box on the last page).

Double Bass Max pickups and systems of all configurations are considered Special Order Items. While special orders usually don't take that long, I'll prudently state that you should allow 3-5 weeks for delivery, as they're custom manufactured to order.

This pickup is often compared to the Revolution Solo (RS1 and RS2) as well as Underwood.

This item is made in USA! Click for more

Is this product returnable? Click here for our return policy.
Is there a Factory Warranty? Click here to find Warranty Information for all of our manufacturers.
International customer? Click here for important information about ordering from outside the USA, and what to expect concerning taxes, VAT, delivery times, and more.

Check Out the FAQ Resources That Apply to This Product:
   PICKUPS and MICROPHONES: Should I get a Pickup or a Mic?

Related Products

Pickups: Making Sense of Your Many Choices (A 'Buyer's Guide')
Pickups: Making Sense of Your Many Choices (A 'Buyer's Guide')

Wow, there are lots of pickups to choose from. What do you get? Where do you even begin? HOW ABOUT HERE?

KNA DB-1 Wood-Encased Upright Bass Pickup for Bridge Wing
KNA DB-1 Wood-Encased Upright Bass Pickup for Bridge Wing

This new bridge wing pickup is the easiest wing pickup to install; no complicated fitment, no tools, no hassle (on almost every bass). And it has a warm, full-bodied sound. Excellent for the traveling bassist, or someone who needs to be able to quickly and easily remove the pickup.


K&K Sound Double Big Twin Upright Bass Pickup
K&K Sound Double Big Twin Upright Bass Pickup

This item is made in USA!The Double Big Twin was the pickup that brought Bob and K&K Sound together; its big, punchy, string-oriented sound can be just the ticket for modern jazz play. Do you favor a detailed tone with plenty of the fingerboard interaction that brings out "growl?" Here's your pickup. Easy to install, a preamp is strongly recommended for this pickup (and we offer a package deal to make it easy!)

From $124.00

Fishman Full Circle Upright Bass Pickup
Fishman Full Circle Upright Bass Pickup

Installed by replacing the stock adjusters on your adjustable bridge, the Full Circle delivers a natural sound with a nice mix of body and string. It has often been described as "microphone-like," which might be a touch overstated, but I understand the description; it's got a good mix of fullness and openness that lends itself to a pretty natural sound. A longtime best-seller!

From $229.95

David Gage Realist Docking Station
David Gage Realist Docking Station

This item is made in USAThe Realist Docking Station is a tailpiece-mountable jack solution for those who:
a.) Don't like string-mounted jacks, and
b.) Would like to add a volume control on their bass.
Incredibly easy to install, it's fully compatible out of the box for the David Gage Realist and Lifeline, and can be used with most other pickups using a standard jack (those with string mounts may need to be modified).


K&K Sound Bass Master Pro Upright Bass Pickup System
K&K Sound Bass Master Pro Upright Bass Pickup System

This item is made in USA!For the ultimate in flexibility, use two pickups with distinctly different strengths, and then blend them to your liking. The Bass Master Pro Combo thusly combines the K&K Bass Max and Double Big Twin pickups, allowing you to separately EQ and then mix them using the included two-channel preamplifier. Analogy: kind of like the bridge pickup and neck pickup on a bass guitar. Yeah, it's kind of like that. Full package features everything you need to get rolling.

From $339.00

Golden Trinity Microphone/Pickup COMBINATION Systems by K&K Sound
Golden Trinity Microphone/Pickup COMBINATION Systems by K&K Sound

Blend the realism of a mic with the direct sound and dependability of a pickup! The Golden Trinity Systems combine the Golden Bullet Condenser Mic with a Bass Max, Double Big Twin, or most any other pickup of your choice, using a small 2-channel blending preamp with individual EQ and gain controls. A full-featured, yet highly compact and uncomplicated system. You literally get the best of both worlds!

From $256.00

Schatten Design RB-1 and RB-1A Player Upright Bass Pickups
Schatten Design RB-1 and RB-1A Player Upright Bass Pickups

The RB-1 Bass Pickup from Schatten Design is similar in concept to other popular "wing-mount" options, and does a good job -- at a lower price point than most. It is also available with or without a small on-board preamp, which can provide gain and buffering for the best interfacing with your other stage gear, and is compact and easy to use.

From $89.95

Individual Components for the K&K Sound Bass Master Rockabilly System
Individual Components for the K&K Sound Bass Master Rockabilly System

This item is made in USA!For the ultimate "everything's included" Rockabilly Pickup set, check out the Bass Master Rockabilly Plus main page; if you already have a bass pickup that you prefer, each piece is also available separately for your convenience.

From $10.00

Some of our customers have told us what they think about this product.
Check out what they had to say!
Bob, The K&K Bassmax and Dtar Solstice preamp are a great combination. I use them along with a cardioid mic which rounds out the sound perfectly. The preamp balances the pickup and mic (which requires phantom power) very evenly. I can run the mic to the mains and the pickup to both the mains and amp, which eliminates any feedback problems. Thanks for the prompt delivery.
Dan P (January 2014)
I recently purchased the K&K Sounds Bas Max & pre-amp package. I live waaaay out here in Nevada. Your descriptions and comments made my decision making of buying something that I have not seen, or heard, a pretty easy one. The system works quite well, now more people can hear my mistakes. :)

I couldn't be happier with my buying experience from you. You provided me with GREAT service and a GREAT product. I'll be back!
Robin S (February 2014)
I just wanted to say a huge thank you. Just used my new k & k bass max. picked it up today, fitted it, as per your excellent instructions, went to a big band rehearsal, plugged it in, and it blew me and the rest of the band away, can't thank you enough, i bought it based on your reviews of pickups and crossed my fingers. Best $100 I've spent. thanks again
Mike W (February 2014)
I couldn't possibly be any happier with the Bass Max pick up that you sent me. I'm thrilled with the price, and the quality is great. It sounds amazing right out of the box, shipping was super fast! And free! You have a customer for life - you rock, and I do too!
Glenn R. (April 2017)
Hi, Just a thank you to Mark for the phone consult in mid August and your help in my decision to buy another Bass Max K&K pickup. My original one, circa ~2001, had just gotten old, with reduced and distorted sound, and my AI Contra amp was overheating cuz I had to crank it so high to compensate. The new pickup arrived (express fee) in 1 day !! It went in snug as a bug after about 30 minutes of careful sanding to make room in the bridge slot for its slightly wider profile ( the old one had gotten significantly compressed and chewed up over the years through fitting it in and out several times into different bridges). The sound was instantly perfect - back to original volume output with the amp settings back down to 25- 30% again. NO distortion. Even the "wolf noises" I was getting from the tailpin area resolved and I have taken out the dampening socks there -which also has increased the resonance. Thank you for helping me make the right decision! Here's to another 20 years!
Eric B (September 2017)