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<blockquote data-quote="helotaxi" data-source="post: 3693510" data-attributes="member: 550915">The ODR amps were not your normal Class A by any means.&nbsp; The RS-A1 was the smaller one and was in fact a Class A amp.&nbsp; The A2 was a high biased Class A/B.&nbsp; The A1 adjusted the voltage rails according to the volume setting.&nbsp; The power supply was controlled by the onboard computer that was hooked into the data bus for the system.&nbsp; Volume was controlled digitally at the amp.&nbsp; D/A conversion was done onboard the amp.&nbsp; Crossover and time alignment function as well as EQ was done digitally onboard.&nbsp; It used a true Class A output stage though.&nbsp; Really high tech, very proprietary and at $1000 each way expensive.&nbsp; Looking at the review of the ODR system in the March/April &#039;04 CSR right now.The only system I remember being featured in CSR that had the full ODR setup, including those amps, was in a 4runner and the Soundcheck mentioned that the setup sounded great except in the dynamic range department where the it just ran out of steam if you turned it up much above normal conversational volume.&nbsp; They attributed it directly to having very little power (read no headroom).</blockquote>

[QUOTE="helotaxi, post: 3693510, member: 550915"] The ODR amps were not your normal Class A by any means. The RS-A1 was the smaller one and was in fact a Class A amp. The A2 was a high biased Class A/B. The A1 adjusted the voltage rails according to the volume setting. The power supply was controlled by the onboard computer that was hooked into the data bus for the system. Volume was controlled digitally at the amp. D/A conversion was done onboard the amp. Crossover and time alignment function as well as EQ was done digitally onboard. It used a true Class A output stage though. Really high tech, very proprietary and at $1000 each way expensive. Looking at the review of the ODR system in the March/April '04 CSR right now. The only system I remember being featured in CSR that had the full ODR setup, including those amps, was in a 4runner and the Soundcheck mentioned that the setup sounded great except in the dynamic range department where the it just ran out of steam if you turned it up much above normal conversational volume. They attributed it directly to having very little power (read no headroom). [/QUOTE]

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