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Digital Amps

Customized Tripath Module Applications

Neptune designs and builds fine entertainment systems - Cool Tools for fun =:-)  Click HERE if you would like to save this web site and page for sharing and future reference.  It all fits on a single floppy disc.  You might say Neptune is very 'high end multimedia'.  Elsewhere on this web site we discuss some facets of our designs individually and compared to other high performance products.  Please visit the links at the upper left as well as our 'Compare Neptune' and 'Video Monitors' pages. 

On this page we discuss four amazing digital amplifiers that combine the best existing technologies in innovative ways to help you assemble systems that outperform equivalently priced solutions and compare favorably to more expensive ones. In the same way that early CD players got a "bad rap" (deservedly so) but eventually CD came 2 dominate the market as the technology improved, so too has the latest generation of digital amplifier technology surpassed the price-performance ratio of analog amplifiers in many respects, from lower power consumption and heat to greater reliability and improved sound quality.

You can't beat the price-per-watt of the Behringer EP2500, so do please keep in mind the Tripath TA3020 topology we use is the same fancy stuff running multi $K amps by 'esoteric' companies like Bel Canto.  Careful design and economy of scale helps us deliver this great technology at a reduced price.  It even holds it's own with the popular NuForce.  Have a listen :-)  The information below is divided into four sections: 1) 2-Channel Clean Amps, 2) 2-Way Satellite Amps, 3) Mono Clean Amps, and 4) Mono Subwoofer Amps  We also make CUSTOM amps up to six kilowatts (6,000 watts) per channel.  CONTACT us with your requirements.  Minimum order on all amps is $4,000.  Mix & match our designs 2 suit your applications.  More




Four Amazing Amps

1 Entertainment Tool

2 Channel Clean Amps
Watts @ 4 Ohms

2 X 300
Watts @ 2 Ohms

2 X 450
Price

$ 210 Each

Our 2 Channel Clean Amps measure 11 inches high by 6 inches deep and 7 inches wide.  They have minimal signal path for maximum clarity & flexibility.  They are also ideal for systems utilizing external crossovers.  These deliver up to 2 X 450 watts at 2 Ohms for sustained periods (hours on end RMS) without distortion or overheating.  We have found in our application testing that this is the ideal balance between power, price, & weight.  The advantage of running your design at low Ohms (paralelling drivers) & amplifying within the speaker cabinetis (shorter cable runs) is tighter, cleaner sound due to increased damping factor.  Combine this with the pure, natural sound of the widely praised Tripath amp modules we employ and the result is enhanced realism difficult to obtain from competing traditional rack-mount or popular 'Class-A/B' solutions at any price.

Controls:
Independent Input Sensitivity switches (-10db, 0db) One For Each Channel (1 & 2)

Other Technical Specifications:
Sustained Output power: 2 X 200 Watts @ 8 Ohms, 2 X 300 Watts @ 4 Ohms, 2 X 450 Watts @ 2 Ohms
Efficiency: Minimum 70% @ 2 Ohms, Maximum 1,254 Watts AC Consumption & 70 Degree Heat Sinc
Frequency Response (maximum power bandwidth): 1 Hertz - 53,000 Hertz +/- 1.2db
Voltage Gain & Input Sensitivity: +2 dB, 1.2 Volts
Input Impedance: 20,000 Ohms balanced, 10,000 Ohms Unbalanced
Input Connectors: XLR (Neutrik Combo) + 1/4" Phone Jack, (RCA input adapter included)
Speaker Output Connectors: Terminal Pins
Cooling: Tripath 'CPU' Fan, Large Plate-Mounted Convection Heat Sinc, Metal Transformer Attachments
Protection: Short Circuit, DC Output, Sustained Distortion Shutoff Protection
T.H.D.: Less Than 0.5% @ Rated Max Outputs (Amp produces no audible hiss or noise at any volume)
Dimensions & Weight: 11" (H) X 6" (D) X 7" (W), 20 Lbs (7.5 Kg)
Idle Power Draw: Automatic shutoff, 12 Watts idle when switched on (input sensing)
AC Requirements:
11 Amps @ 120 Volts, 5.5 Amp @ 240 Volts (Internal DC Power Max: 500 VA)


2 Entertainment Tool

2-Way Satellite Amps

Watts @ 4 Ohms

2 X 300
Watts @ 2 Ohms

2 X 450
Price

$ 262.50 Each


Our 2-Way Satellite Amps measure 11 inches high by 6 inches deep and 7 inches wide.  They can deliver up to 2 X 450 watts at 2 Ohms for sustained periods (hours on end RMS) without distortion or overheating.  The built-in crossover and dual-isolated amplifier design in these amps helps deliver the most transparent, natural sound in your multi-way speakers.  Another great advantage of running your design at low Ohms (paralelling drivers) & amplifying within the speaker cabinetis (shorter cable runs) is tighter, cleaner sound due to increased damping factor.  Combine these advantages with the widely-praised Tripath amp modules we employ and you get enhanced realism difficult to obtain from competing designs regardless of price.

Controls:
1) Input Sensitivity Switch (-10db, 0db) Controls Both Channels (Bass-Mid, & Tweeter)
2) 3-Position High-Pass Switch: Off, On @ 30Hz, On @ 50Hz (36db per octave)
3) Variable "Warm Boost" Knob: This is a defeatable, variable 30Hz boost with 9 (NINE) octave width.  This affects sounds all the way up the frequency spectrum in decending degree, volume gently increasing with lower frequency to emulate the warmth of tube amplifiers, etc.  It can help 'cure' many audio ills =:-)
4) Variable Crossover Frequency Control Knob: Vvariable from 1Khz-3Khz, with 'graduated slope': 6db-oct on first octave, then 36db thereafter on tweeter, 6db-oct for two octaves on low pass, then 36db thereafter.
5) Variable Tweeter Volume Control Knob

Other Technical Specifications:
Sustained Output power: 2 X 200 Watts @ 8 Ohms, 2 X 300 Watts @ 4 Ohms, 2 X 450 Watts @ 2 Ohms
Efficiency: Minimum 70% @ 2 Ohms, Maximum 1,254 Watts AC Consumption & 70 Degree Heat Sinc
Frequency Response (maximum power bandwidth): 1 Hertz - 53,000 Hertz +/- 1.2db
Voltage Gain & Input Sensitivity: +2 dB, 1.2 Volts
Input Impedance: 20,000 Ohms balanced, 10,000 Ohms Unbalanced
Input Connectors: XLR (Neutrik Combo) + 1/4" Phone Jack, (RCA input adapter included)
Speaker Output Connectors: Terminal Pins
Cooling: Tripath 'CPU' Fan, Large Plate-Mounted Convection Heat Sinc, Metal Transformer Attachments
Protection: Short Circuit, DC Output, Sustained Distortion Shutoff Protection
T.H.D.: Less Than 0.5% @ Rated Max Outputs
(Amp produces no audible hiss or noise at any volume)
Dimensions & Weight: 11" (H) X 6" (D) X 7" (W), 20 Lbs (7.5 Kg)
Idle Power Draw: Automatic shutoff, 12 Watts idle when switched on (input sensing)
AC Requirements:
11 Amps @ 120 Volts, 5.5 Amp @ 240 Volts (Internal DC Power Max: 500 VA)


3 Entertainment Tool

Mono Clean Amps

Watts @ 8 Ohms

1 X 600
Watts @ 4 Ohms

1 X 900
Price

$ 210 Each


Our Mono Clean Amps measure 11 inches high by 6 inches deep and 7 inches wide.  They can deliver up to 900 watts at 4 Ohms for sustained periods (hours on end RMS) without distortion or overheating.  We have found in our application testing that this is the ideal balance between power, price, & weight.  At a weight of approximately 20 pounds each, they are small and light enough to mount in a wide variety of existing or custom made speaker designs. The built-in power switch is augmented by auto-on and auto-off capabilities for true 'set and forget' installations.

Be they Subwoofers or Satellites, your speakers will benefit with the addition of our Mono Clean Amps attached to their backs.  Even the built-in protection circuitry auto-resets when required. These highly versatile amps are great for driving commercial and home theaters, live sound and DJ / nightclub subwoofers and full range systems. The minimal distance between amp and driver(s) in a plate amp based solution yields maximum damping factor, heard as better clarity and slam than typical rack-amped solutions can generate.  The simplified layout is ideal for extermally processed systems or mounting in existing systems that employ passive crossovers within their cabinets.  Simply cut a hole where the input jacks used to be & connect the outputs of our Mono Plate mps to the input of your crossover circuit & voila'!  U have yourself a fantastic active speaker! =:-)

Controls:
3-Position Input Sensitivity switch (-10db, 0db, +10db)

Other Technical Specifications:
Sustained Output power: 1 X 500 Watts @ 8 Ohms, 1 X 900 Watts @ 4 Ohms
Efficiency: Minimum 70% @ 4 Ohms, Maximum 1,254 Watts AC Consumption & 70 Degree Heat Sinc
Frequency Response (maximum power bandwidth): 1 Hertz - 53,000 Hertz +/- 1.2db
Voltage Gain & Input Sensitivity: +2 dB, 1.2 Volts
Input Impedance: 20,000 Ohms balanced, 10,000 Ohms Unbalanced
Input Connectors: XLR (Neutrik Combo) + 1/4" Phone Jack, (RCA input adapter included)
Speaker Output Connectors: Terminal Pins
Cooling: Tripath 'CPU' Fan, Large Plate-Mounted Convection Heat Sinc, Metal Transformer Attachments
Protection: Short Circuit, DC Output, Sustained Distortion Shutoff Protection
T.H.D.: Less Than 0.5% @ Rated Max Outputs
(Amp produces no audible hiss or noise at any volume)
Dimensions & Weight: 11" (H) X 6" (D) X 7" (W), 20 Lbs (7.5 Kg)
Idle Power Draw: Automatic shutoff, 12 Watts idle when switched on (input sensing)
AC Requirements:
11 Amps @ 120 Volts, 5.5 Amp @ 240 Volts (Internal DC Power Max: 500 VA)

For purpose of comparison we have on the left a Sunfire "True Subwoofer Signature" plate amplifier. This and other "home theater" products from the Carver company deliver great performance for their size. Based on communication satellite 'tracking power supply' technology, their 'cube subs' achieve high 'W.A.F' (Wife Acceptance Factor). Combining these small, light & powerful amps with much larger drivers further enhances overal performance. On the right we have one of our new 1,000 watt digital amp designs based on new, faster & multi-state PWM bitstream switching technology from Tripath. Though both designs are all-digital, the execution is different (click image for alternate view). The combination of large toroidial transformer & Tripath chip design deliver equivalent 'real world' power to the Sunfire with the added benefit of full frequency range capability, improved resolution and slam =:-)


4 Entertainment Tool

Mono Subwoofer Amps
Watts @ 8 Ohms

1 X 600
Watts @ 4 Ohms

1 X 900
Price

$ 262.50 Each

Like our Mono Clean Amps, our Mono Subwoofer Amps measure 10 inches tall by 7 inches wide and 3 inches deep. Ideal for use in Home Theaters or Cinema installations, these amps offer a variety of features custom-tailored to great subwoofer performance.  Not only does their design allow you to save space by mounting the amps in the rear of your existing speakers, but you save a lot of money on AC power as well because the advanced digital design from Tripath only draws power as needed, with minimal power at idle.  You can literally sell off your racks of amplifier-related gear & save money AND space in the process.  With our Mono Subwoofer Amps, it all adds up to fatten your bottom line =8^D

Let us also not forget the wonderful sound.  The elimination of long cable runs by using our plate amps instead of remote equipment racks helps dramatically enhance damping factor - heard as clarity and 'slam'.  The trasnsparent sound helps better enhance the entertainment experience.  They are also very safe.  Built-in protection circuitry auto-resets when required, and their efficient electrical design generates minimal heat. These versatile amps are great for driving commercial and home theaters, live sound and DJ / nightclub subwoofers and other bass systems such as drum & bass guitar rigs.  Enjoy the 'new' sound of Tripath-based amps from Neptune: Powerful expansive sound - an exciting reflection of your recordings & performances.

Controls:
1) 3-position Input Sensitivity Switch (-10db, 0db, +10db)
2) 3-Position High-Pass Switch: Off, On @ 15Hz, On @ 25Hz (36db per octave)
3) Variable Low Pass Frequency Control Knob: 30-120Hz (36db per octave)
4) Variable Low Frequency Boost Volume Control Knob: Variable from 0db to +30db (0.8 octave bandwidth)
5) Variable Low Frequency Boost Frequency Control Knob:
15Hz-35Hz

Other Technical Specifications:
Sustained Output power: 1 X 500 Watts @ 8 Ohms, 1 X 900 Watts @ 4 Ohms
Efficiency: Minimum 70% @ 4 Ohms, Maximum 1,254 Watts AC Consumption & 70 Degree Heat Sinc
Frequency Response (power bandwidth): 1 Hertz - 53,000 Hertz +/- 1.2db (1-120Hz with crossover)
Voltage Gain & Input Sensitivity: +2 dB, 1.2 Volts
Input Impedance: 20,000 Ohms balanced, 10,000 Ohms Unbalanced
Input Connectors: XLR (Neutrik Combo) + 1/4" Phone Jack, (RCA input adapter included)
Speaker Output Connectors: Terminal Pins
Cooling: Tripath 'CPU' Fan, Large Plate-Mounted Convection Heat Sinc, Metal Transformer Attachments
Protection: Short Circuit, DC Output, Sustained Distortion Shutoff Protection
T.H.D.: Less Than 0.5% @ Rated Max Outputs
(Amp produces no audible hiss or noise at any volume)
Dimensions & Weight: 11" (H) X 6" (D) X 7" (W), 20 Lbs (7.5 Kg)
Idle Power Draw: Automatic shutoff, 12 Watts idle when switched on (input sensing)
AC Requirements:
11 Amps @ 120 Volts, 5.5 Amp @ 240 Volts (Internal DC Power Max: 500 VA)

Neptune helps give you the power to succeed =:-)





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