KWA 99 Monoblocks

KWA 99 Monoblock Amplifiers:

Dan’s Design Basis
I saw demand for a 100W MOSFET amp, biased as much into Class A as possible, for best sound. I opted against Pure Class A due to inefficiency and room heating heat rejection. Mono blocks were chosen in keeping with the compact footprint common to the ‘9’ series of products, including the PH 9.0/X/T, Analog Bridge and LS 99 preamp. I felt efficient use of space to be a critical factor in todays world. Chassis and aesthetics are clean and elegant but simple, reducing cost, allowing us to focus on component quality and design for best sonics. Lastly, amber illuminated power VU meters were chosen for a vintage tone aesthetic that I believe embodies the design concept.

Is This the Right Amplifier for You?

The KWA Series is designed for those who already appreciate what their system can do—but know there is more to be revealed.

This amplifier is for you if:

You feel your speakers are capable of more than you’re currently hearing
Your system sounds good, but lacks effortlessness at higher or lower listening levels
You want greater control, dimensionality, and realism—not just more volume
You’ve experienced what small improvements can bring, and are ready for a meaningful step forward

If your goal is simply louder playback, there are many options.

If your goal is greater connection to the music, this is where the difference begins.

What Changes When You Upgrade

The difference is not subtle—but it’s also not what most expect.

With the KWA Series, the improvement is not about volume. It’s about control and ease.

Bass becomes more defined and controlled, not exaggerated
The soundstage becomes more stable, dimensional, and believable
Complex passages remain clear and effortless
Music flows with less strain, even at low listening levels

The result is simple:

The system becomes less noticeable—and the music becomes more present.

Where This Fits in Your System

Every ModWright product is designed as part of a greater whole.

A typical system progression:

Analog Bridge – Enhances musicality and engagement at any level
PH 9.0XT / LS 99 Preamp – Reveal deeper detail, space, and tonal richness
KWA Amplification – Provides control, authority, and realism

Each step builds on the last—bringing you closer to a system that disappears, leaving only the music.

If You Own the Analog Bridge…

Many of our customers begin their journey with the Analog Bridge—and for good reason.

It offers a clear and immediate improvement in musicality and engagement.

The KWA Series builds on that same foundation—but extends it across the entire system.

Where the Analog Bridge enhances the signal, the KWA amplifier brings:

Authority
Control
Effortless delivery

Together, they create a system that is not just improved—but transformed.

If you’ve experienced what the Analog Bridge can do, this is the next step in realizing its full potential.

POWER RATINGS
100W at 8 ohms.
200W at 4 ohms.

FEATURES
(1) RCA input.
(1) XLR input.
RCA and XLR inputs are transformer coupled to input stage with floated ground.
(1) Pair 5-way Binding Posts – Positive (+) Red, and Negative (-) Black. Not bridged.
(1) Internal Led On/Off Switch: Disables internal LED’s.
(1) VU Dimmer Knob: Adjusts brightness of VU meter, to zero brightness.
(1) 12V Trigger: External 12V input power on/off trigger.
Class A/B Operation. High Class A bias, but not pure Class A.
Dimensions: 10.5”W x 6.5”H x 16”D – Height includes footers. Depth includes 1” binding posts.
Product Weight: 30 lbs / Shipped Weight: 35 lbs

SPECIFICATIONS
Gain: 26dB.
Frequency Response: 10Hz – 150Khz (+0, -1dB).
Input Impedance: 47K.
Noise Floor: -90dB (Unweighted).
THD: < .05%

Proudly hand crafted in the U.S.A.

Not sure if this is the right amplifier for your system? Contact us directly—we’re happy to help.

Tube – Solid-State Hybrid System Design: The ModWright Way