The DVR (Digital Video Recorder) has changed the way many people watch TV. Now instead of being tied to a broadcast schedule, you can record the shows you want, and watch them at your convenience without having to worry about a blank tape (or a blank DVD) being inserted in the recorder. Because the DVR is hard-drive based, you just need to make sure you've set the timer and that there is adequate space on the internal drive. But moving beyond the VCR paradigm, DVRs (including the Channel Master CM-7000PAL) allow you to pause live TV (great for a quick phone call or bathroom break) or you can begin watching a show 15 minutes after it starts, and fast forward through the commercials while still being done watching the show at the scheduled end time.
Now none of the above behavior is particularly "new" -- TiVo and other hard drive-based recorders have been around for several years -- but what makes the CM-7000PAL HD DVR different from just about every other DVR on the market today is that there is no monthly fee associated with its use. Instead of getting nickel-and-dimed to death by your cable company, satellite provider or TiVo with monthly DVR or guide fees, you can pick up a CM-7000PAL: it pulls in your local HD and digital channels for free, uses publically available program listing information to give you a fairly useful and informative guide, and gets you all of the essential features of those other DVRs, for a one-time purchase price.
The CM-7000PAL isn't perfect - in some ways its operation is a throwback to the days of the VCR. Yes, you can surf through a guide listing of up to 8 days worth of shows on your available channels, and just highlight the show you want to record and hit the OK button in order to schedule the recording. But this scheduled recording has no "intelligence" in it - it's just a recording timer that begins and ends at a scheduled time on a particular day on a specific channel. This is fine for most purposes, but if a show is moved to a different day/time (as sometimes happens the weeks of major sporting events), you might miss an episode unless you remember to go back into the guide that week and set the timer to record the show at its new date/time. Similarly, you cannot program the CM-7000PAL to record only new (non-rerun) episodes of a show. If you set it to record "Survivor" on CBS at 8:00 on Thursday night for an hour, then you'll get whatever is on CBS Thursday night at 8:00 for an hour forever (or at least until you cancel that timer) and you won't automatically get that season finale and reunion show on Sunday night. More advanced DVRs such as TiVo and those available from cable and satellite providers are more intelligent in that they can automatically tape any instance of a show by the show name, regardless of the day it's on, as well as taping only new episodes if that is your preference.
Also, the CM-7000PAL will not work with cable or satellite broadcasts. The built-in tuners (there are two of them) are both ATSC over-the-air (OTA) digital tuners. This means you need an indoor or outdoor antenna in order to pull in your local HD and digital channels. The drawback here is that you can't get any "premium" channels (e.g., HBO, ESPN), but the obvious benefit is that there is no monthly fee for the TV service either. The price you pay for the DVR plus the cost of an antenna (if you don't already own one) is the only money you'll need to shell out. Period. (Well, OK, you might need a couple of extra connection cables too, but these are pretty inexpensive... see below for details).
Having two tuners means that you can record one show while watching another channel live, or you can record two channels live, while watching a third previously recorded show. Also, if your TV has its own built-in tuner (most High Def-capable TVs in the US include an ATSC tuner), then you could record two shows on the DVR while watching a third live broadcast directly on your TV.
In terms of performance, we did not notice any degradation between live HD broadcasts and recorded playback. The unit is basically capturing the live broadcast stream and storing it without any additional compression, so the quality is very high. In fact, in most cases, the quality is actually higher than the quality of cable and satellite broadcasts which frequently use heavy compression to fit more channels into a fixed broadcasting bandwidth. Audio quality is also fine, with a fiberoptic digital output provided in case you want to hook this up to a surround sound or home theater system. Depending on the broadcast, you can get up to a full 5.1-channel discrete Dolby Digital sound output from your recordings or from live TV. If you want to take full advantage of the HD image quality, then you will want to pick up an HDMI cable, as this is not included in the box (I've had good luck with HDMI cables in the AmazonBasics cable line - inexpensive but reliable, IMHO). Also, if your receiver or HTiB system does not support HDMI audio, then pick up a Toslink fiberoptic cable as well, to take advantage of Dolby Digital 5.1 surround sound.
Overall, the CM-7000PAL is a solid DVR at a fairly affordable price, made even more affordable by the lack of any monthly subscription fees. Our comprehensive review of the unit is available at Big Picture Big Sound (dot com).