Modwright KWA 99 Mono Power Amplifier
$16,250.00
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.
Manufacturer’s website ModWright
Description
Specifications
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
Gain: 26dB.
Frequency Response: 10Hz – 150Khz (+0, -1dB).
Input Impedance: 47K.
Noise Floor: -90dB (Unweighted).
THD: < .05%
Reviews
http://www.modwright.com/product-reviews.php
ModWright Instruments KWA-99 Mono Amplifiers review in “Australian Hi-Fi” Magazine, April / May 2025.
Complete review at Here
Brand
Modwright
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