Mesa/Boogie Subway D-350 Ultra-Compact 350-Watt Bass Amp Head

The Smallest and Lightest Bass Amp From MESA Packs 350-watts of Class D Punch! The Mesa/Boogie Subway D-350 Ultra-Compact 350-Watt Bass Amp Head

The Mesa Subway D-350 is the ultra-compact champ in MESA's Subway Bass Series and, at only 3 pounds 2 ounces, represents the smallest, lightest bass amp in MESA history! While ultra-portable, it still packs a powerful punch with 350 watts of Class D power - All from a simple, intuitive feature set that provides all the tone-shaping tools you need and nothing you don’t to deliver the tone, feel, and response that has made the Subway Series our most popular to date.

• World-class MESA tone and quality in their most affordable bass amp to date
• Made in Petaluma, CA, with the world's finest materials
• At 3 pounds 2 ounces, it's the lightest MESA bass amp ever built
• Class D Power with 175 W RMS into 8 ohms, and 350 W RMS into 4 ohms
• Pro tone-shaping features, yet simple, intuitive operation
• Great for home use, recording sessions, and small to mid-sized venues
• Compact size (3" x 9" x 8.25") that fits into your gig bag’s accessory compartment
• 500mA USB power port for powering accessories
• Headphone output for silent practice - no cabinet load needed
• XLR direct output (DI) with mic/line level, ground lift, and pre/post EQ switches
• Silent operation - no cooling fan!
• Gig Bag included
• Optional rackmount kit available

Legendary MESA Heritage

Building on the foundation laid by their acclaimed Subway® D-800™, the Subway D-350 uses a solid-state preamp coupled with a lightweight Class D power amp and switch-mode power supply to deliver heaping portions of world-class TONE in an incredibly small and lightweight package that’s perfect for home use and studio recording while still delivering plenty of power and punch to provide MESA-quality tone authoritatively and dependably for small and mid-sized venues, gig after gig.

All the Features You Need, Without Complexity

The MESA Subway D-350 easily adapts for use with active or passive basses with the flip of the Active/Passive switch, while the Input Mute switch lets you use inline tuners silently. The Bright switch adds bite and sparkle to the tone and opens up the top end a bit more, and all the switches have LED status indicators. Separate Gain and Master Volume controls allow you to dial up a wide range of tones from shimmering clean to mild overdrive and everything in between, while the built-in fixed high-pass filter (HPF) blocks unwanted, non-musical, headroom-robbing sub-sonic frequencies.

The Variable Voicing control adjusts the amp’s response from a flatter curve to a more vintage curve by modifying and varying levels and frequency response in multiple regions with the turn of a single knob. The fully active 4-band Baxandall EQ features fixed frequency high and low-frequency shelving controls, as well as fixed frequency Low Mid and High Mid peak/dip bands for even more tonal control.  

Outputs for One and All

When you're practicing at home, the Aux Input and Headphones output jacks let you listen to a media player and your bass simultaneously without disturbing others. The Subway D-350 also has a USB power port for powering accessories, while the fully-featured balanced XLR direct output (DI) with pre/post EQ source, ground lift, and Mic/Line level switches are perfect for delivering MESA’s legendary tone to the front-of-house PA or your recording system's audio interface. A pair of speakON™ jacks allow you to connect one or two speaker cabinets; the Subway D-350 is an excellent partner for MESA's highly musical Subway® Ultra-Lite cabinets.

With its ideal combination of small size, light weight, ample power, and stellar tonal flexibility, the Subway D-350 is perfect for recording sessions, small to mid-sized venues, or as a micro-sized backup amp on tour.

SPECIFICATIONS

• Preamp Type: Solid-State Preamp
• Wattage: 350 Watts @ 4 Ohms / 175 Watts @ 8 Ohms
• Graphic Eq Reverb Fx Solo: Variable Voicing (Flat to Vintage Scoop), Fully Active 4-Band EQ plus Bright Switch (for enhanced top-end)
• Weight: 3 Lbs. 2 Oz.
• Dimensions: 3" H x 9" W x 8 1/4" D
• Available Format: Compact (Metal) Head
• Amp Type: Solid-State Preamp & Class D Power Amp
• Power Amp Tubes: Class D Power Amp
• Wattages Quick Reference: 350 Watts @ 4 Ohms / 175 Watts @ 8 Ohms
• Power Amp Details Class Wattage: Ultra-Light-Weight, Compact Class D Power Amp with Protection & Limit LED Indicators
• Speaker Outputs: 2 - Speakon Output Jacks (no 1/4" speaker jacks) - 8 or 4 Ohms
• Extra Features: Headphone Output, Auxiliary Input, & USB Power Outlet with LED Indicator

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.