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…
The KWH 225i represents the culmination of years of SS and tube preamp and amplifier design. Our preferred approach has always been that of a hybrid system. The KWI 200 SS integrated amp was a big success for us, offering excellent performance and integration. The KWH 225i takes things to the next level. We combined the solid state output stage…
New LS 100 tube single-ended preamp from ModWright Instruments! The design goal of the LS 100 was to pick up where the 9.0SE, our first product to be produced, over seven years ago, to the next level. We strove for improved sonics, aesthetics and functionality. We Succeeded! Single-ended design with 10 function remote control, (2) 6SN7 (Driver) and (1) 5AR4/GZ34 rectifier. Single gain/buffer…
Dan’s Design Basis Based on the LS 300, our Reference Flagship balanced tube preamp, the LS 99 uses the same transformer coupled input and output topology, tube rectified, and SS regulated power supplies with (2) 6922 driver tubes. The power supply is outboard, but not dual mono, like the LS 300. In keeping with the ‘9’ series of products, we…
Presenting the new LS 300 Balanced Tube Preamplifier, featuring outboard supply and dual mono construction. The LS 300 represents our new Fully Balanced Reference Tube preamplifier. Styled like the PH 150 and KWA 150SE, the LS 300 represents elegant and refined aesthetics and sonics. Multiple sets of fully balanced XLR inputs and outputs as well as RCA inputs and main…
The PH 9.0 takes the reference performance of the PH 150 tube phono stage to a level of performance that belies its affordable price. Both the PH 9.0 and PH 150 are ideal for reference systems or secondary audiophile systems. Both were optimized by designer/owner Dan Wright to provide the most natural and musical presentation of analog playback. Extensive testing…
We are pleased to present the new PH 150 Reference Tube Phono stage with on-the-fly loading and attenuation controls. The PH 150 is an all tube-transformer coupled design with external SS PS 150 power supply. Max gain = 72dB. MM/MC, Stereo/Mono, RCA and XLR (fully balanced outs) and rear phase toggle. Resistive and capacitive loading may be adjusted on-the-fly via front panel controls. Gain…
