A Mesa bass powerhouse that brings bells and whistles galore, but remains true to the fat tube-based tone of the WalkAbout preamp that helped inspire it.
Recorded direct into Avid Mbox into Logic X. Mesa/Boogie 1x15 cab miked with an Audio-Technica AE5400. Direct from head and mic balance split 50/50.
Clip 1: Recorded with Sadowsky Vintage PJ 5, (reverse P). Amp settings set flat except for passive mid at 10 o’clock. Power damping set to low.
Clip 2: Recorded with Music Man StingRay 5 fretless with piezo pickup. Amp settings set flat except for passive mid at 10 o’clock and 350 Hz frequency boosted to 1 o’clock. Power damping set to high.
RatingsPros:Versatility, road-worthiness, rear-panel features, tube tone. Cons: Might be somewhat difficult to navigate for players accustomed to simpler amps. Street: $999 Mesa/Boogie Subway WD-800 mesaboogie.com | Tones: Ease of Use: Build/Design: Value: |
Mesa/Boogie has probably made their biggest mark over the years with their guitar amps, but Mesa’s bass offerings have been providing us low-enders with a wide and respected variety of options and models since the company’s inception. The hallmark of their bass amps has been a strong midrange character that many players have grown to love. And while some other large bass-amp manufacturers tout rigs that offer transparency, much like an amplified clean DI signal, Mesa has never been shy about doing for bassists what they’ve done so successfully for guitarists: offer character, and lots of it. A few years ago, the company introduced the lightweight and surprisingly clean-sounding Subway D-800, which effectively became the beginning of a growing line of lightweight bass gear. More recently, Mesa unveiled the decked-out Subway WD-800, which boasts a 12AT7-powered preamp as one of its more significant new features. Spoiler alert: This new rig absolutely sounds just like a Mesa, and that’s a good thing.
Familiar Face
My expectations for the WD-800 were unusually high. Why? I’ve had plenty of experience using the company’s D-800 amp since it was released, both on the road and in the studio. When I first unpacked the amp from its included carrying bag with an external pocket for cables (nice touch), the look and feel of the chassis felt very familiar. In fact, the size and weight specs of the WD-800 are just slightly larger than they are for the D-800.
The increased height of the WD-800 helps accommodate the three parametric midrange-frequency selection controls, which are located directly above the boost/cut dials for the corresponding frequencies. The tone-shaping section might appear almost dazzling to bassists accustomed to meat-and-potatoes amplifiers, because in addition to the cluster of midrange controls, there are dials for bass, passive mid, treble, high-pass filter, and power-amp damping. For players who may have thought the D-800 didn’t offer enough tone-shaping possibilities, well, here you go.
Blinded Me with Science
I’ll quickly dive into what these controls do, since some of them are not commonplace. The high-pass filter comes in handy when using high drive tones or playing at loud volumes to protect a speaker cabinet from excessive low end. The passive-mid control has a different symmetry and response than the parametric EQ section, since it controls more frequencies at once.
On the far-right side, the power-amp damping control has three different settings: low, medium, and high. A simplified explanation would be that a lower damping setting feels looser or more “bloomy” in the bottom end, while a higher damping has a tighter low end or more immediate feeling. As a very general rule, Mesa recommends trying a higher damping setting with ported cabinets and a lower damping setting for sealed cabinets. This control subtlety affects the feel of the amp more than the tone of the amp, so experimentation is key to dialing in what you prefer.
The rear panel houses all the usual suspects, and then some. It shares some key features with the D-800 and the D-800+—namely the impedance switch from 4/8 ohm to 2 ohm, DI pre/post EQ switch, tuner out, and headphone out, among others. The WD-800’s headphone out does not require that a speaker be hooked up to the amplifier, which is a feature I found very usable. Other features on the rear panel include a footswitch input for the parametric EQ (footswitch not included) and a USB charging port, which is something I’d like to see more manufacturers add to their amps.
Tube Snarl
I started out by playing fingerstyle with a passive Sadowsky PJ and the amp running through a Mesa/Boogie Subway Ultra-Lite 1x15 cab. I used the P-style pickup to determine how quickly I could dial in a classic, middle-of-the-road bass tone. With all controls set flat, the amp has a somewhat strong personality in spite of sounding clean and smooth. To my ears, this personality shows itself the most in the higher part of the low mids, where the amp is voiced slightly forward compared to its tubeless Subway line predecessors. This tone will cut through well in a full band setting without having to boost any additional mids. Turning the passive mid control brings out more of the fretboard-wood sound and fret noises, to give soft fingerstyle playing plenty of attitude, without overdriving the preamp’s 12AT7 tube at all. If I used too much of the passive mid, however, I felt like I was losing a bit of low end.
After getting a good gauge of the amp’s personality, I switched over to my fretless active Music Man StingRay 5. The natural midrange voice of the Subway WD-800 was a perfect match with this instrument. The Mesa took just enough sheen off the top end of the active bass tone and made the mwah of the bass sound as “whiny” as you would ever want a fretless bass to sound. Instead of boosting 800 Hz, which is typically an ideal fretless frequency to boost, I boosted 350 Hz and achieved the fretless tone dreams are made of.
The Verdict
The Mesa/Boogie Subway WD-800 is a control freak’s dream. There is more than one way to control almost every frequency the amp produces. This amp will satisfy players who want tremendous versatility out of one amp, as well as fans of the D-800 who simply want more tone-shaping power. In spite of the pleasant starting point of the WD-800, I found it took me slightly longer to get my tone than it does with the voicing control on the original Subway D-800 head. Even though the amp does a nice slap tone, I’d say it shines more with rock-oriented sounds, and it definitely comes out near the top of the heap in lightweight amplification. There are other bass-amp manufacturers who have struggled with reproducing the soul of their older amps in a lightweight class-D format. That’s not the case here. If the Mesa/Boogie Big Block or Carbine stirred your soul a few years back, this amp will make your heart beat a little faster again.
The tube-vs.-solid-state debate lives on.
It would, of course, be naive to think anyone could end the decades-old and sometimes toxic debate regarding the two main amp technologies, especially in a one-page column. Yes, the topic of tube versus solid-state has been and continues to be covered in lengthy articles and books, but we'll always have plenty to talk about when it comes to decision time for the modern bassist.
Last month, we discussed power ratings for amps and which of the various ratings provide the most accurate and comparable values [“Parsing Power Ratings," June 2019]. Because marketing language can sometimes present unrealistic power claims and confuse the shopping experience, we confirmed that sticking with the RMS (Root Mean Square) rating is the safest bet for accuracy. Of course, this still doesn't paint the whole picture of what an amp is capable of. Besides its sheer power, an amp also needs to be able to provide its muscle in the problematic, power-consuming low end.
As for the type of amp technology, most bassists these days are looking for modern solid-state amps rather than their tube predecessors. It's interesting to note, however, how different this ratio is among our 6-string companions. Guitarists say they love and need the warmth of tube distortion for their upper register, yet still use a battery of non-tube-equipped distortion pedals anyway. Could it be a psychological effect of seeing the warm glow of a heated tube, and subconsciously connecting it with tonal warmth? To each his own, but to me, it seems to fit the mold of other cults and myths regarding vintage gear.
Let's be honest: Solid-state amp distortion isn't necessarily the most pleasing. When it comes to tube amps, however, it's not even the tube that dominates the outcome, but rather the output transformer that limits their frequency range on both ends. This isn't a big deal when looking at the upper range of the spectrum, but in these times when so many bassists are constantly reaching for an even lower end, a tube amp simply isn't able to deliver the necessary bandwidth.
Say we have a “good" output transformer in a tube amp, with the result a bandwidth of 35 Hz to 15 kHz. It's often missing in the technical specs, but this range should also be followed by a rating such as “+/- 3 dB," meaning that the frequency response curve stays within this limit over the full bandwidth and everything below isn't counted as such.
A hi-fi enthusiast's dream of linearity would have this figure at +/- 0 dB over the complete audible band of 20 Hz to 20 kHz, but the physical reality tells us, “Dream on!" For an output transformer—consisting of a core and one or more primary and secondary windings—the lower frequency limit stems from the magnetic saturation of its core. And trying to get around it ends up in a super heavy and huge amp.
To help demonstrate, the following specs are from two well-established amps:
• Tube amp: 40 Hz to 15 kHz (+/-3 dB), weight 79 pounds
• Transistor amp: 20 Hz to 25 kHz (+/-1 dB), weight 24 pounds
And these are the fundamental frequencies of the lowest open strings:
E: 41 Hz
B: 31 Hz
F#: 23 Hz (for the extremists)
The 3 dB drop with the tube amp example means it delivers just half the volume at 40 Hz. If you are seriously considering a tube-amp purchase, you simply can't expect it to support the really low end of most modern bassists. (You can expect a heavy tube amp to give your back a workout!) For more on decibels and volume, be sure to check out my January 2018 column, “Power to the Bass Peeps!"
Compared to tube amps, transistors have come a long way since Julius Edgar Lilienfeld got the first FET (field effect transistor) patent in 1925. And transistors only gained ground with the move from germanium to silicon in the form of bipolar transistors. The further development of the FET and then MOSFET (metal oxide semiconductor field effect transistor) marked a transition for almost every field of electronics—except guitar amps, of course.
The list of advantages that transistors have over tubes is a long one: lighter, cheaper, smaller, mechanical impassivity, power efficiency, and an extremely long life span. If you are still not convinced and are feeling nostalgic about those glowing tubes, you could go for something with a tube preamp. Preamps offer the nicer distortion anyway, right?
So, is that all we need to know about amps? Of course not! This debate will live on, as will the amplifier “class debate," and there's plenty more to talk about there, too.