Technically speaking, nothing! Sonically speaking, everything! In the beginning, there were only tubes... and inside your amp you would find them glowing as they amplify your signal. Eventually they a found "better" way of making amps and tubes were replaced by things like operational amplifiers and transistors. From that point on, amps could be made smaller and cheaper, but not necessarily better. Tube amps sound warmer, smoother, and more musical for any style of music.

This is a question that gets asked in various forms quite regularly. The short answer is that each seems to have their advantages and disadvantages, in terms of portability, reliability and sound. As with any piece of musical equipment, the ideal thing is to try several amps of each type and decide for yourself which camp you belong to, but comments on both sides of the issue have been summarized here to help guide you in your own testing.

A tube is a vacuum tube. A valve is the British term for a vacuum tube. Solid state means transistor, or chips such as op amps that are built from transistors. (Diodes may also be either tube or solid state). We sometimes refer to solid state as "silicon" or "sand", but solid state devices may be germanium based as well. Valvestate" is a Marshall marketing term to describe an amp design which has a solid state power section but the "characteristics" of a tube amp.

The Radial Switchbone is an ABY box that is designed to toggle between two amps. Although not quite the same as switching heads, the Switchbone works very well, sounds amazing and will do the job.

Just as there can't be one best wine for all meals, there isn't one best amplifier or preamplifier for all music systems and tastes. We believe that properly designed vacuum tube and solid-state electronics can and should coexist and complement each other, very much like red and white wines complement fine cuisine and coexist in the real world. BAT's mission is to give our customers choices that fit their lifestyles, budgets, and system needs.

Both the ABREVA® tube and pump use the same 10% Docosanol formulation. The difference is in the device used to dispense ABREVA®. The tube is great for use at home, and the pump offers a clean and easy way to carry your ABREVA® with you on the go.

Answer: All relays are basically switches that open and close. When closed, they complete a circuit that allows electricity to flow. A mechanical relay uses an older technology, involving an electromagnetic coil to close the contacts that complete the connection. This action causes a clicking noise. Some people find it annoying; some find it reassuring. Because the relay is mechanical, it can fail for all the usual mechanical reasons ? e.g.

The difference is that a demand softener only regenerates when you use enough water to cause it to regenerate. The "solid state" (or mechanical) time clock unit will regenerate at a specific time even though you have not used water or used very little. All of our Aqua Pure units utilize Electronic Meter Technology. The state of the art control head allows you to monitor and control every function and cycle. It meters your water usage and regenerates only when necessary.

Yes, you can do this mod to any tube amp, regardless of the type of rectifier. You need to add a 1N4007 diode in series with the V+ line coming off the second filter cap, feeding the splitter and preamp. The cathode (BAR) should face the preamp circuitry, and the anode is connected to the junction of the choke output and second filter cap. When the output tubes pull current from the main supply, the power supply sags.

Aerogel is made up of microscopic beads or strands connected to form a continuous network. Since the network fills space and supports itself, it is considered a solid.

This is true. To deal with this, the Headbone is equipped to manage two loads: the speaker for the active amp and a load resistor for the standby amp. The Headbone transitions between these two loads when the status is changed.

Solid State recorder refers to the technology and memory that the PMD670 utilizes. The PMD670 records to non-volatile type memories such as Compact Flash Cards or Microdrives. This means that your digital audio is preserved in memory until the files are removed from the card. Any of the files that are recorded onto these cards in the PMD670 cannot be recorded over, either.

While traditional computer systems typically use hard disk drives for storage of data and programs, solid-state systems instead rely on devices without moving parts. The solid-state advantage is the decreased chance of hardware failure, especially in harsh environments. Solid-state systems can be constructed by substituting flash memory for hard disks.

The shipping charge, thats it. Both samples and regular items are the same size & shape and have the same labels. The shipping is cheaper (& slower) on sample tubes GIVING CUSTOMERS AN OPTION WHEN THEY ONLY WANT TO TRY OUR PRODUCTS OR TO PURCHASE JUST A FEW TUBES (up to 9).

Well, the biggest difference goes back to MOSFETs again. Most of our newer ???'4 number'' amplifiers (i.e. the GFA-5802) use MOSFETs while all our older ???'3 number'' amplifiers (i.e. the GFA-555), used bipolars.

Engineered products, available in planks and strips, are manufactured of hardwood using a cross-directional laminated construction (3 to 5 layers), with a top layer of premium hardwood. This construction counteracts the natural tendency of wood to expand and contract with seasonal changes in temperature and humidity, making engineered products inherently dimensionally stable. Solid products, available in planks, strips or parquet, are manufactured from a solid piece of wood.

A boxsprings is a unit that contains springs or other types of torsion elements. These elements allow the boxsprings to deflect or flex when weight is applied through the mattress. As solid foundation is made of wood and does not have the ability to flex or deflect. They appear the same from the outside. It is important to know which is under the mattress you are considering and why. Both have their uses under different mattress types.

Body Butters are made with lots of natural and unrefined cocoa butter and the melting point for cocoa butter is about 98 degrees Fahrenheit. Therefore, if you leave your Body Butter where the temperature is above 90 it can get quite liquid, or if it is below 70 it will be quite firm. If you warm the tube in your hand or stick it in the fridge this should solve the problem.

Amps is an abbreviation for amperes. Amperes is the technical term for the amount of current flowing through wiring. A good analogy has always been to think of amps as water pressure through a pipe. Low pressure, the water trickles out but high pressure and that hose can, knock the socks off you. Wiring is sized to handle different amperes, therefore your circuit breaker / fuses are rated for different amperes. Circuit breakers protect wiring.

The most common media in use today for creating solid state disks is Flash ROMs with some sort of BIOS extension (for bootable media) or installable device driver (for non-bootable data storage media). Most manufacturers provide a BIOS extension that will allow the user to use the standard DOS/Windows commands and file structure.