Product Reviews and Customer Comments


Model 401 Microphone Preamp

Review by Andrew Marshall, Editor and Publisher of Audio Ideas Guide, please click here.


Model 407 Universal Phono Preamp

"I'm very pleased with the quality from the 407 - this is outstanding value for money! It's wonderful to hear those old records come to life." I.K., Glasgow, UK

"I'm very pleased with my Model 407. As advertised, it has very low noise; but the amazing thing is its sound quality. I interted it into my audiophile sound system to see how it compares with more expensive preamps and was extremely impressed - this is a great piece of audiophile gear! As for sound restoration work, the low noise, quality circuitry, and precision, as well as the variable output, allow me to quickly dial in the correct settings in a way that I never could with my OWL or my Esoteric Sound Reequalizer (not to mention that those are both very noisy devices)." D.W., Arkansas


Model 408 Universal Phono Preamp

"I just wanted you to know that the preamp arrived OK. I set it up this weekend and played and recorded some old 78 rpm records through it. Playing these old records utilizing the correct turnover and rolloff makes a big difference in how they sound -- it opens them up. A preamp with RIAA EQ curves made them sound muffled and tubby. I'm looking forware to making some great wave files. Thanks for a great product." C.R., Palm Springs, CA.


Model 4010 "The Restoration Preamp"TM

Customer review (April 18, 2008), please click here.


Model 4041 RIAA Phono Preamp

Brief history and comments by Tom Simmons, please click here.


Model TSMD-1 Loudspeakers

"They are really a smooth, silky sounding pair of monitors. I found the top end to be very pleasant - just the kind that allows one to mix for long hours without fatiguing the ears. I also thought they had a good bit of low end for speakers their size. I listened with a Legacy subwoofer, which I kept turning down to match them. I liked the overall sound of the speakers." N.L., Memphis, TN


TDL Technology, Inc.,
5260 Cochise Trail, Las Cruces, NM 88012-9736 USA
575-382-3173, FAX 575-382-8810