This is my mini review of the Loricraft PRC4-Deluxe Record Cleaning Machine. I have been using it now for almost one month so I have a fair idea on how the machine works. I am not a professional reviewer. This is an end user review. A lot of the information about its physical characteristics I got from various web sites and I will include when deemed necessary. I did perform my own measurements too to supplement this review. The US importer Smart Devices have links to professional reviews if someone is interested: http://www.smartdev.com/loricraft.html Description of the machine: The Loricraft PRC4 is a big machine 18”W, 11”H (with acrylic cover on) and 16” D and weighs about 35 pounds. What distinguishes the PRC4 Deluxe from the PRC3 is a hard acrylic dust cover (can be added to the PRC3), adjustable leveling feet, vacuum arm rest, and a very expensive German made industrial double headed vacuum pump. If the suction power of the PRC-3 is graded as 1, then the PRC-4 suction value is 2.2 and the PRC-4 Deluxe has suction value 3.7 (two pump heads). Therefore, you would need 3.7 PRC-3 pumps to create as much vacuum as a PRC-4 Deluxe. The design engineers discovered that the PRC-4 Deluxe cannot be operated in a room where the temperature is below 60F. The vacuum is so intense the nozzle will freeze from the air velocity and record cleaning fluid! The machine is built like a tank with beautifully finished cherry wood sides and black shiny acrylic top with nice tactile feel to the switches. The arm is made of shiny brass (the machine comes with a can of British metal polish wadding). There are three switches, one runs the “turntable” forward or reverse, one runs the arm motor and one the vacuum pump. The machine can be operated for hours and hours at end without any problems. In addition, it has a 5 year warranty and can be repaired in the US. Assembly is easy and can be done in 10 minutes. The arm mimics a turntable arm. It has a downward weight of 2.5 gram set at the factory (my measurements were 2.38 g using an Acoustech Digital Stylus Force meter). The arm has an inner and outer tube. A nylon thread, fed from a spool at the base of the arm assembly, travels from the back of the arm to the front via the inner tube. At the tip of the arm (where a stylus would be) there is a nylon nozzle with a hole in the middle where the nylon thread enters at the tip and exists at the top to travel back along the arm’s top external small tube. At the end of the tube, a small 3 mm vinyl tube attatches and leads to a bottle that collects the suctioned cleaning fluid and the spent nylon thread. The collecting bottle is then attached to the suction pump inside the machine by a 6 mm vinyl tube. The jar has to be emptied when 2/3 full. This basically lays out the principal concept behind the design and function of the machine. How does the machine works (In a nutshell) 1. Put an LP on the platter 2. Apply your favorite cleaning liquid, turn the platter motor on (the turntable runs at 80 RPM) and spread the liquid with a brush. 3. Stop the platter motor and wait for the liquid to work as recommended by the manufacturer 4. Place the arm over the edge of the record label (inner grove) then turn on the platter motor, arm motor and pump motor. 5. Watch as the powerful vacuum pump sucks out the fluid through the tip of the nozzle and into the collection bottle as it travels from the inner grove to the outer edge of the LP. The arm traveling time is about one minute. 6. While the vacuum pump is one, turn the nylon spindle about 5 mm and the dirty thread will be sucked by this amount into the collecting jar. 7. Turn off all motors and rest the arm in its designated spot with the clean nylon thread at its tip and you are ready to repeat the cycle for side two of the LP and so on. Why nylon you may ask. Because it does not generate static electricity so the LP comes out clean and static free. 8. Ah, one more thing. Place the cleaned LP in a clean inner sleeve and don’t forget to listen it after all this work! What about noise? I can’t compare it to any other machine as I’ve not seen or heard any. The Loricraft is my first RCM (used an Orbitrac before it). It is quite enough to do anything you want while it is working in the background. You can carry a conversation at normal levels. If music is playing I can’t hear it even standing next to it. With everything on (turntable motor, arm motor and vacuum motor) my sound level meter registered 60 dB on top and center of the turntable, 56 dB at 1 meter (or close to ear level while cleaning an LP) and 50 -51 dB at my listening position (about 3 -4 meters away). So if I am listening to music at 72-74 dB the Loricraft will be a faint hum in the background. I don’t hear it when listening to music at 80 dB or above. I checked a vacuum cleaner at home and it measured 90 dB of noise (ouch!). What is my current method of cleaning? Here there is no one glove fits all. The cleaning method and solutions used depend on how dirty the record is. After one month of trying, my current method involves the following and takes about eight minutes to perform. 1. Place the record on the platter and start the platter motor forward. Use a carbon fiber brush to clean dust and large particulate matter. Reverse direction and do the same. 2. Turn motor off. Protect the label (I use a rubber ring that came with the machine). Spray LP with Vinyl-Zyme Gold solution. Turn platter motor on and evenly spread solution with a 2 inch painter’s sponge brush. Reverse directions and spread solution. Wait 45-60 seconds for solution to work. 3. Turn platter motor, arm motor and vacuum motor on. Vacuum solution off. Turn nylon thread spindle 5 mm to provide new thread. 4. Apply your record cleaner solution of choice (I use L’Art Du Son) and spread evenly over LP with a dedicated nylon brush that came with machine. Repeat in reverse direction. Turn platter motor off and wait for solution to work. Two minutes in my case. Here, I found that a two minute glass timer is helpful. Turn all motors on and vacuum as above. Advance nylon thread 5 mm when done. 5. Apply a water rinse. I use Reverse Osmosis/De-ionized water and spread with another nylon brush used for the water rinse only. Vacuum water off. Record is ready to play as it is dry and static free. N.B. If the record is new, I skip the Vinyl-Zyme step. The Results: Physically the surface of the record is restored to "as new" shiny black look. Most finger prints are gone in one cleaning cycle. Some very dirty records need more than one cleaning cycle or waiting longer for the cleaning fluid to work (the LP may partially dry and you have to apply more cleaning fluid). The LP has much less surface noise and if in excellent shape the background could be dead silent. Some LPs will continue to have surface noise (very minor and in soft passages) even with multiple cleanings. So if you expect your old beaten-up LPs to sound "near mint" you will be disappointed. The machine cannot restore damaged, abused and scratched LPs with groove wear distortion. As I have used the cleaning solutions that came with the machine, my results will vary from other Loricraft users and mine later as I experiment with different methods. Summary: Pros: The machine is beautifully built, very quite, easy to use (but not too automated), fun to watch as it works and does an excellent job at cleaning records. The dust cover is a must as after all you want to keep the cleaning machine dust free. It can clean 33 1/3, 45 and 78 RPM records. Very minimal cross contamination from record to record. Easy to empty spent fluid and thread. Cons: Very expensive. The cleaning fluid will spill on the surface of the machine (but it can be easily wiped off). The collecting jar at the side of the machine is ugly (but practical). Expect to spend a lot of time cleaning your collection! Some pictures to follow: Loricraft PRC-4 with cover on Cleaning with the carbon microfiber brush. Notice the black rubber ring protecting the label (wish it was 3-5 mm wider) Spreading the cleaning solution with the supplied nylon brush The arm vacuuming the fluid. Notice how dry the record is (inner side) The cleaning fluids. L to R: RO/DI water, mixed L'art Du Son fluid, concentrated L'Art Du Son bottle, Vinyl-Zyme, Premiere. Thank you for reading my first mini review. I'll be happy to answer questions and post more photos in this thread and post updates on my cleaning methods.