Furman PL-8C Power and Surge Protection

Furman PL-8C Power and Surge Protection Review

Furman PL-8C Power and Surge Protection Feature

• Furman Power Conditioner 9-outlet, 15 amp, rack mount with pull-out lights

The Classic Series from Furman brings together superior protection and outstanding performance in a sturdy, rack-mountable design. The Classic Series features Furman's revolutionary Series Multi-Stage Protection (SMP), Linear Filtering Technology (LiFT), and Extreme Voltage Shutdown (EVS). Together, these technologies comprise what is, without question, one of the world's most advanced and comprehensive transient voltage surge supressors.Surge ProtectionFurman's exclusive SMP technology provides the highest level of surge & spike protection available.Noise FiltrationLiFT offers AC power filtering to ensure clean power for unequaled audio & video clarity.Voltage ProtectionAdvanced EVS circuitry detects dangerous voltage irregularities and safely powers down itself and connected equipment in unsafe conditions.Pull-out LightsDual smooth track retractable LED lights illuminate equipment in your rack.Diagnostic LightsLED status indicators warn you when voltage is outside of nominal range or when protection has been compromised.Isolated BanksIsolated outlet banks minimize inter-component interference and noise contamination.Wall Wart SpacingThree widely spaced outlets accommodate bulky AC power transformers.15 AMP Rating15 Amp rating featuring a high inrush magnetic circuit breaker for added protection.Nine Total OutletsNine total outlets (8 rear panel outlets and one front panel convenience outlet).BNC Lamp ConnectorRear panel BNC connector powers any standard gooseneck lamp for rear rack illumination.

DBX 223XL Stereo 2 Way, Mono 3 Way Crossover with XLR Connectors

DBX 223XL Stereo 2 Way, Mono 3 Way Crossover with XLR Connectors Review

DBX 223XL Stereo 2 Way, Mono 3 Way Crossover with XLR Connectors Feature

• XLR balanced ins and outs
• Mode switch for stereo 2-way or mono 3-way operation
• Low frequency summed (subwoofer) output
• x10 range switch on both channels
• 40Hz high pass (low cut) filter both channels

Let’s take a look at the construction features of the dbx® 223XL. As you turn the controls you will notice that these units are extremely well built. The controls exude great precision, and the feel is a solid “click”. Also, when you open the box, you won’t find the external power supply that accompanies most processors in this price range. That’s because we know how difficult external power supplies can be to work with and even though it costs a little more, we put the high quality power supply right in the unit. All the inputs and outputs are balanced XLRs that are screwed directly to the chassis. This connection of the jacks to the chassis insures that even if someone stomps on a cable plugged into the unit, it’s not going to tear up the circuit board inside. All dbx crossovers feature Linkwitz-Riley 24dB per octave filters, the professional standard. But then again, what did you expect?

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping*

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping* Review

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping* Feature

• USB Charger
• 20 Amp Rating
• 14 Total Outlets
• Three year warranty
• Isolated Banks

BRAND NEW FURMAN P-2400 AR 20A AC LINE VOLTAGE REGULATOR + POWER CONDITIONING -- DELIVERS A STABLE 120 VOLTS(PERFECT FOR PRO AUDIO AND NETWORKING EQUIPMENT) *AUTHORIZED DEALERS, WE WILL BEAT ANY ADVERTISED PRICE* *FREE SHIPPING* Features: True RMS Voltage Regulation True RMS Voltage Regulation delivers stable voltage output (selectable between 230V and 240V) to protect equipment from problems caused by AC lne voltage irregularities. Surge Protection Furman's exclusive SMP technology provides the highest level of surge & spike protection available. Noise Filtration LiFT offers AC power filtering to ensure clean power for unequaled audio & video clarity. Voltage Protection Advanced EVS circuitry detects dangerous voltage irregularities and safely powers down itself and connected equipment in unsafe conditions. Diagnostic Lights LED status indicators warn you when voltage is outside of nominal range or when protection has been compromised. Voltmeter / Ammeter Large LED voltmeter/ammeter displays incoming voltage and output current draw . Isolated Banks Isolated outlet banks minimize inter-component interference and noise contamination. USB Charger Front panel USB convenience outlets allows you to charge most media devices or power a USB lamp. 20 Amp Rating 20 Amp rating featuring a high inrush thermal circuit breaker for added protection. 14 Total Outlets 14 total outlets (twelve rear panel outlets and two front panel convenience outlet). Three year warranty We are authorized dealers

SKB-XRack2

SKB-XRack2 Review

SKB-XRack2 Feature

• Roto-molded construction
• 10-1/2" depth
• Sufficient depth to leave component power and patch cords plugged in and still close the back panel

New 10-1/2 inch depth on two-space X-Rack

Furman ADP-1520 Adapter Cord, 20 Amp Socket to 15 Amp Plug

Furman ADP-1520 Adapter Cord, 20 Amp Socket to 15 Amp Plug Review

Furman ADP-1520 Adapter Cord, 20 Amp Socket to 15 Amp Plug Feature

• High quality professional
• Audio and video
• Revolutionary multi stage protection circuit
• Home and professional recording

This adapter cord allows you to use your 20 amp products in 15 amp applications. Approximately 12" long, 20 amp socket to 15 amp plug.

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping*

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping* Review

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping* Feature

• USB Charger
• 20 Amp Rating
• 14 Total Outlets
• Three year warranty
• Isolated Banks

BRAND NEW FURMAN P-2400 AR 20A AC LINE VOLTAGE REGULATOR + POWER CONDITIONING -- DELIVERS A STABLE 120 VOLTS(PERFECT FOR PRO AUDIO AND NETWORKING EQUIPMENT) *AUTHORIZED DEALERS, WE WILL BEAT ANY ADVERTISED PRICE* *FREE SHIPPING* Features: True RMS Voltage Regulation True RMS Voltage Regulation delivers stable voltage output (selectable between 230V and 240V) to protect equipment from problems caused by AC lne voltage irregularities. Surge Protection Furman's exclusive SMP technology provides the highest level of surge & spike protection available. Noise Filtration LiFT offers AC power filtering to ensure clean power for unequaled audio & video clarity. Voltage Protection Advanced EVS circuitry detects dangerous voltage irregularities and safely powers down itself and connected equipment in unsafe conditions. Diagnostic Lights LED status indicators warn you when voltage is outside of nominal range or when protection has been compromised. Voltmeter / Ammeter Large LED voltmeter/ammeter displays incoming voltage and output current draw . Isolated Banks Isolated outlet banks minimize inter-component interference and noise contamination. USB Charger Front panel USB convenience outlets allows you to charge most media devices or power a USB lamp. 20 Amp Rating 20 Amp rating featuring a high inrush thermal circuit breaker for added protection. 14 Total Outlets 14 total outlets (twelve rear panel outlets and two front panel convenience outlet). Three year warranty We are authorized dealers

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping*

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping* Review

Brand New Furman P-2400 Ar 20a Ac Line Voltage Regulator + Power Conditioning -- Delivers a Stable 120 Volts(perfect for Pro Audio and Networking Equipment) *Authorized Dealers, We Will Beat Any Advertised Price* *Free Shipping* Feature

• USB Charger
• 20 Amp Rating
• 14 Total Outlets
• Three year warranty
• Isolated Banks

BRAND NEW FURMAN P-2400 AR 20A AC LINE VOLTAGE REGULATOR + POWER CONDITIONING -- DELIVERS A STABLE 120 VOLTS(PERFECT FOR PRO AUDIO AND NETWORKING EQUIPMENT) *AUTHORIZED DEALERS, WE WILL BEAT ANY ADVERTISED PRICE* *FREE SHIPPING* Features: True RMS Voltage Regulation True RMS Voltage Regulation delivers stable voltage output (selectable between 230V and 240V) to protect equipment from problems caused by AC lne voltage irregularities. Surge Protection Furman's exclusive SMP technology provides the highest level of surge & spike protection available. Noise Filtration LiFT offers AC power filtering to ensure clean power for unequaled audio & video clarity. Voltage Protection Advanced EVS circuitry detects dangerous voltage irregularities and safely powers down itself and connected equipment in unsafe conditions. Diagnostic Lights LED status indicators warn you when voltage is outside of nominal range or when protection has been compromised. Voltmeter / Ammeter Large LED voltmeter/ammeter displays incoming voltage and output current draw . Isolated Banks Isolated outlet banks minimize inter-component interference and noise contamination. USB Charger Front panel USB convenience outlets allows you to charge most media devices or power a USB lamp. 20 Amp Rating 20 Amp rating featuring a high inrush thermal circuit breaker for added protection. 14 Total Outlets 14 total outlets (twelve rear panel outlets and two front panel convenience outlet). Three year warranty We are authorized dealers

Furman PL-PRO DMC 120 Volt 20 Amp Power Conditioner

Furman PL-PRO DMC 120 Volt 20 Amp Power Conditioner Review

The Furman PL-PRO DMC is the latest generation of Furman's legendary 20 amp power conditioners featuring Furman's exclusive Series Multi-Stage PROtection Plus (SMP+) with Linear Filtering Technology (LiFT) and Extreme Voltage Shutdown (EVS) for ultra-reliable protection of your gear. The PL-PRO DMC also incorporates a USB port on the front panel to allow for the charging of MP3 players and other such devices that can be recharged via USB. Considering how affordable this level of protection is you can't afford to not have a PL-PRO DMC!

Gator Shallow 6U Audio Rack (GR-6S)

Gator Shallow 6U Audio Rack (GR-6S) Review

Gator Shallow 6U Audio Rack (GR-6S) Feature

• Lightweight polyethylene construction
• Threaded, field replaceable 7mm zinc-plated steel rack rails
• Front & rear rack rails
• Heavy-duty twist latches
• Compact 14.25" rack depth

Molded PE Rack Case; Front, Rear Rails; 6U; 14.25" Deep

DBX 266XL Dual Compressor Gate

DBX 266XL Dual Compressor Gate Review

DBX 266XL Dual Compressor Gate Feature

• Goof proof operation to smooth uneven levels, add sustain to guitars, fatten drums or tighten up mixes
• New gate timing algorithms ensure the smoothest release characteristics
• Program-adaptive expander/gates
• Great sounding dynamics control for any type of program material
• Separate precision LED displays for gain reduction, compression threshold and gate threshold allow quick, accurate setup
• Provide less than musical compression, coupled with gating
• Swallows transients-or closes early
• Adjusts the actual attack and release times to optimally match the program material
• Advanced gate circuitry uses a completely new, program-dependent timing algorithm
• Produces ultra-smooth release characteristics-even with complex signals

The dbx 266XL Compressor/Gate provides two channels of noise gating, OverEasy or classic hard knee compression and PeakStop limiting to give complete control of signal dynamics to studios, sound reinforcement companies, musicians, or anyone who needs quality processing quickly and easily.

Artifact-Free Dynamics
Most compressor/gates provide less than musical compression, coupled with gating that swallows transients--or closes early, cutting off decay and reverb tails. The superb engineering in the 266XL ensures that both its compression and gating provide versatility and excellent sonic performance in situations where other compressor/gates typically produce undesirable processing artifacts.

Balanced inputs and outputs on 1/4" TRS and XLR; 1/4-inch sidechain insert.

10-Segment LED Display for gain reduction (up to 30dB).

Click for enlarged view of rear panel.

Auto Dynamic Circuitry
The Auto Dynamic circuitry continuously adjusts the actual attack and release times to optimally match the program material. Since users aren't restricted to using the Attack and Release controls only in "peak" operation, they can tailor the response of the 266XL for individual tracks, mixed program material, special effects or system protection. As a result, production studios can use the versatile 266XL to replace multiple "single-purpose" limiters while sound reinforcement users can standardize on the 266XL for all of their applications.

Expander/Gate Circuit
With variable release time and +15dBu maximum threshold, the 266XL's advanced gate circuitry uses a completely new, program-dependent timing algorithm to produce ultra-smooth release characteristics--even with complex signals, such as voice or reverb decays. dbx engineers went on to take advantage of the wide dynamic range and high precision of the dbx VCA to design in an extra-wide threshold range and ensure top gating performance for each application.

OverEasy/Hard Knee Selection
Allows selection between dbx's famous OverEasy compression curve and the classic "Hard Knee" curve popularized by the original dbx 160, 161 and 162. OverEasy compression permits extremely smooth, natural sounding compression, without artifacts, due to the gradual change of compression around the threshold. In hard-knee mode, the 266XL can provide abrupt compression effects as well as hard-limiting applications.

Stereo or Dual Mono Operation
In Stereo couple mode, the Channel 1 controls become Master controls, and Channel 2 follows precisely to ensure a rock solid stereo image--even with high amounts of compression.

True RMS Level Detection
Senses the power in the program in a musical manner, much as human hearing does, giving results superior to peak or average detection.

Hardwire System Bypass Buttons on both channels
Allow the audio to pass even if the unit is unplugged, and are also useful for comparing the processed and unprocessed signals.

Separate LED Displays
Separate precision LED displays for gain reduction, compression threshold and gate threshold allow quick, accurate setup.

Electronically Balanced XLR and 1/4" TRS Input and Output Jacks
Tip/Ring/Sleeve phone jacks and XLR-type jacks are wired in parallel; either input will accept an audio signal for processing by the 266XL.

Separate Sidechain Inserts
Enables an outboard processor or signal to control compression or gating.

What's in the Box
266XL Unit, AC Power Cord, Operation Manual, Registration Card Most compressor/gates provide less than musical compression, coupled with gating that swallows transients—or closes early, cutting off decay and reverb tails. The superb engineering in the 266XL ensures that both its compression and gating provide versatility and excellent sonic performance in situations where other compressor/gates typically produce undesirable processing artifacts. When using the 266XL’s AutoDynamic™ Attack and Release controls, artists and engineers will find that the center settings deliver classic dbx compression, while the full control range produces voicings that extend from slow “leveling” to aggressive “peak” limiting. The Auto Dynamic™ circuitry continuously adjusts the actual attack and release times to optimally match the program material. Since users aren’t restricted to using the Attack and Release controls only in “peak” operation, they can tailor the response of the 266XL for individual tracks, mixed program material, special effects or system protection. As a result, production studios can use the versatile 266XL to replace multiple “single-purpose” limiters while sound reinforcement users can standardize on the 266XL for all of their applications. The 266XL’s advanced gate circuitry uses a completely new, program-dependent timing algorithm to produce ultra-smooth release characteristics—even with complex signals, such as voice or reverb decays. dbx engineers went on to take advantage of the wide dynamic range and high precision of the dbx® VCA to design in an extra-wide threshold range and ensure top gating performance for each application.

Furman PS-PRO-II Power and Surge Protection

Furman PS-PRO-II Power and Surge Protection Review

Furman PS-PRO-II Power and Surge Protection Feature

• FURMAN PS-PRO II RACK MOUNT 9 OUTLET 20 AMP POWER CONDITIONER/SEQUENCER W/ SMP+

The most widely recognized and trusted name in AC power conditioning is proud to introduce the PS-PRO II power conditioner / sequencer, featuring Furman's revolutionary SMP technology. Furman's Series Multi-Stage Protection (SMP) circuit also features our exclusive Linear Filter Technology (LiFT) coupled with Extreme Voltage Shutdown (EVS) and a high current TVZ-MOVs. Together, these technologies comprise what is, without question, the world's most advanced and comprehensive transient voltage surge suppressor. SMP (Series Multi-Stage Protection Plus)Furmans SMP surge suppression virtually eliminates service calls. Traditional surge suppression circuits sacrifice themselves when exposed to multiple transient voltage spikes, requiring the dismantling of your system, and repair of your surge suppressor. Not so with SMP. With Furmans SMP, damaging transient voltages are safely absorbed, clamped and dissipated - no sacrificed parts, no service calls, no down time. Unique to Furmans SMP is its unparalleled clamping voltage, even when tested beyond the grueling specifications of - USA/CIDAs A-1-1 test. While other designs offer clamping voltages that are well above 300VAC peak (far beyond long accepted professional standards), Furmans SMP clamps at 188VAC peak, 133 VAC RMS even when tested with multiple 6000VAC - 3000 Amp surges! This unprecedented level of protection is only available with Furmans SMP technology. LiFT (Linear Filtering Technology)Unfortunately, traditional AC filter/conditioners have been designed for unrealistic laboratory conditions. Prior technologies could actually harm audio and video performance more than they help, due to the resonant peaking of their antiquated, non-linear designs. Under certain conditions, these designs can actually add more than 10 dB of noise to the incoming AC line! Worse still, lost digital data, the need to reboot digital presets, or destroyed digital converters are frequently caused by excessive voltage spikes and AC

Furman SS-6B Steel Power Strip, 6 Outlets, 15 Foot Power Cord, Standard Level Power Conditioning

Furman SS-6B Steel Power Strip, 6 Outlets, 15 Foot Power Cord, Standard Level Power Conditioning Review

Furman SS-6B Steel Power Strip, 6 Outlets, 15 Foot Power Cord, Standard Level Power Conditioning Feature

• 6-outlet block
• EMI/RFI noise attenuation
• Heavy-duty metal construction
• Illuminated on/off switch
• Circuit breaker

Pro surge protector with a 6-outlet block and heavy-duty metal construction.

Furman Power Factor Pro

Furman Power Factor Pro Review

Furman Power Factor Pro Feature

• SMP provides the highest level of protection available
• LiFT significantly reduces AC line noise
• E.V.S. protects equipment from dangerous overvoltage conditions
• Zero ground contamination circuitry assures delivery of pure AC
• Front panel meter displays incoming line voltage ranging from 90 to 128 volts

Today?s AC power is contaminated. Whether you play in a stadium, bar, or rehearsal space, they all have one thing in common, the AC power is supplied from your local utility. What?s worse is that the ?power factor? supplied from your building?s AC outlet is typically poor, thanks to increasingly overtaxed power lines and raised line impedance. In fact, the quality of AC power has been so poor for so long, most musicians have no idea how great their amplifiers could really sound. When the AC power factor is poor, amplifiers sound muddy because their power supplies can?t deliver when pushed. The scream and cry from a guitar loses bite and harmonics, basses lose their punch and weight, keyboards sound nasal, losing clarity, attack, and extension. Not so with Furman?s Power Factor Pro. The Power Factor Pro?s Clear Tone Technology actually lowers the AC line impedance supplied by your wall outlet, while storing energy for peak current demands. In fact, there are over 45 Amps of instantaneous current reserve in the Power Factor Pro. Additionally, Linear Filtering Technology dramatically lowers AC line noise to unprecedented levels in the critical audio frequency band. What does this mean? Just plug in your current starved amplifier, crank up the volume, and listen to the dynamics, harmonics, and clarity you?ve been missing! Additionally, the Power Factor Pro is the most comprehensive power conditioner ever created for the serious musician. Furman's exclusive series mode...

New Model! Brand New Furman M-8x2 Merit X Series 9 Outlet 15 Amp Professional Rack Mount Power Conditioner with Surge Protection with 9 Outlets and Built in Noise Filtration **Free 2 Year Extended Warranty** **Free Shipping**

New Model! Brand New Furman M-8x2 Merit X Series 9 Outlet 15 Amp Professional Rack Mount Power Conditioner with Surge Protection with 9 Outlets and Built in Noise Filtration **Free 2 Year Extended Warranty** **Free Shipping** Review

New Model! Brand New Furman M-8x2 Merit X Series 9 Outlet 15 Amp Professional Rack Mount Power Conditioner with Surge Protection with 9 Outlets and Built in Noise Filtration **Free 2 Year Extended Warranty** **Free Shipping** Feature

• Noise Filtration
• Surge Protection
• 9 Total Outlets
• 15 Amp Rating
• "Protection OK" Indicator

NEW MODEL! BRAND NEW FURMAN M-8X2 MERIT X SERIES 9 OUTLET 15 AMP PROFESSIONAL RACK MOUNT POWER CONDITIONER WITH SURGE PROTECTION WITH 9 OUTLETS AND BUILT IN NOISE FILTRATION **FREE 2 YEAR EXTENDED WARRANTY** **FREE SHIPPING** Features: Noise Filtration AC noise filtering to reduce radio frequency and electromagnetic interference (RFI/EMI) Surge Protection Spike & surge protection ensures equipment stays safe and your power stays clean 9 Total Outlets 8 rear panel outlets and 1 front panel outlet 15 Amp Rating 15 amp rating, with circuit breaker "Protection OK" Indicator Front panel indicator LED lets you know that your equipment is being protected Wall Wart Spacing Indicator Rear outlets have been spaced to accommodate even the bulkiest of wall warts and adapters

Furman RS-1 Remote System Control of Furman Power Sequencers, Keyswitch Panel, Maintained Contact On/Off Sequence

Furman RS-1 Remote System Control of Furman Power Sequencers, Keyswitch Panel, Maintained Contact On/Off Sequence Review

Furman RS-1 Remote System Control of Furman Power Sequencers, Keyswitch Panel, Maintained Contact On/Off Sequence Feature

• Warranty - 3 YEAR
• Condition - BRAND NEW IN ORIGINAL PACKAGING
• Manufacturer - FURMAN

Furman RS-1 Remote System Control of Furman Power Sequencers, Keyswitch Panel, Maintained Contact On/Off Sequence

New Model! Brand New Furman M-8x2 Merit X Series 9 Outlet 15 Amp Professional Rack Mount Power Conditioner with Surge Protection with 9 Outlets and Built in Noise Filtration **Free 2 Year Extended Warranty** **Free Shipping**

New Model! Brand New Furman M-8x2 Merit X Series 9 Outlet 15 Amp Professional Rack Mount Power Conditioner with Surge Protection with 9 Outlets and Built in Noise Filtration **Free 2 Year Extended Warranty** **Free Shipping** Review

New Model! Brand New Furman M-8x2 Merit X Series 9 Outlet 15 Amp Professional Rack Mount Power Conditioner with Surge Protection with 9 Outlets and Built in Noise Filtration **Free 2 Year Extended Warranty** **Free Shipping** Feature

• Noise Filtration
• Surge Protection
• 9 Total Outlets
• 15 Amp Rating
• "Protection OK" Indicator

NEW MODEL! BRAND NEW FURMAN M-8X2 MERIT X SERIES 9 OUTLET 15 AMP PROFESSIONAL RACK MOUNT POWER CONDITIONER WITH SURGE PROTECTION WITH 9 OUTLETS AND BUILT IN NOISE FILTRATION **FREE 2 YEAR EXTENDED WARRANTY** **FREE SHIPPING** Features: Noise Filtration AC noise filtering to reduce radio frequency and electromagnetic interference (RFI/EMI) Surge Protection Spike & surge protection ensures equipment stays safe and your power stays clean 9 Total Outlets 8 rear panel outlets and 1 front panel outlet 15 Amp Rating 15 amp rating, with circuit breaker "Protection OK" Indicator Front panel indicator LED lets you know that your equipment is being protected Wall Wart Spacing Indicator Rear outlets have been spaced to accommodate even the bulkiest of wall warts and adapters