Choosing among turntables & record players comes down to one practical question: do you want music immediately, or are you comfortable taking on a repair project? The Numark TTUSB sits firmly in the second group. Its features suggest useful connectivity, but the condition and limited testing are the main factors to weigh.
Quick verdict
At USD 49.99, the Numark TTUSB DJ Turntable USB Audio Interface is more appropriately viewed as a parts-or-repair purchase than a ready-to-play setup. It powers on, includes a 45 adapter and USB cable, and has RCA and USB outputs. However, only power-on operation is described as tested, and the included cartridge's needle is believed to be disconnected.
That combination makes the TTUSB potentially interesting for a repair-minded buyer who specifically wants a Numark DJ turntable with USB capability. It is not a straightforward choice for someone expecting to connect speakers, place a record, and start listening.
Numark TTUSB DJ Turntable USB Audio Interface TT USB UNTESTED PARTS/REPAIR READ

The strongest reason to choose the Numark TTUSB is its set of built-in connections and controls: RCA output, USB output, a built-in phono preamp, and pitch control. The included USB cable and 45 adapter add practical pieces for a project setup, while the cartridge and cover are also included.
The central limitation is clearly stated in the product's condition: it is sold as-is for parts or repair. The needle may not be connected, and the available testing extends only to powering on. That means the presence of the cartridge, cable, and outputs should not be treated as proof that the unit is ready for playback or recording.
Who it suits
This turntable makes sense for someone who can diagnose or repair audio equipment, wants to work with a belt-drive design, or is specifically interested in its USB audio interface. The RCA connection and phono preamp also give the project a defined audio path once the unit is functioning properly.
It is a poor fit for a first-time buyer who wants a dependable listening setup without troubleshooting. The as-is condition creates a meaningful gap between owning the hardware and having a usable record player, especially when the needle's connection is uncertain.
What stands out from the listed details
The TTUSB has a practical feature mix for a repair project rather than a stripped-down turntable: pitch control, a built-in phono preamp, RCA output, and USB output. Its silver finish and DJ-oriented naming also identify the intended style of equipment without requiring extra accessories to establish the basic connection options.
Meaningful trade-offs
The USD 49.99 price keeps the initial purchase specific and easy to assess, but the limited testing means repair work could become part of the real cost. The key trade-off is therefore not simply features versus price; it is connectivity and included pieces versus uncertainty about playback operation.
Bottom line
Choose the Numark TTUSB if you want a belt-drive turntable project with USB and RCA connectivity and are prepared for parts-or-repair uncertainty. For immediate record listening, the disconnected-needle concern and power-on-only testing make it difficult to recommend as a ready-to-use purchase.