The Accuphase integrated amplifier range brings a single company philosophy to four very different power and topology choices, so the model you pick depends far more on your speakers and listening priorities than on any idea of one being universally superior. Every model here shares the core Accuphase design language: the AAVA volume control that replaces a physical potentiometer with 65,536 switchable current steps, the signature analog power meters, thick machined-aluminum front panels with the hairline finish, heavy high-rigidity chassis, and plug-in option slots that let you add a DAC board or phono board later. The lineup is arranged in two families. The E-3000 and E-4000 are Class-AB models built for higher wattage and efficiency, while the E-700 and E-800S are Pure Class-A models built for maximum linearity. Within each pairing, the higher number sits further up the range. Understanding that grid, Class-AB power versus Class-A linearity, is the key to choosing confidently.
The Models One by One
What is the Accuphase E-3000, and who is it for?
The Accuphase E-3000 is the entry point into the current integrated range, a Class-AB amplifier delivering 100 watts per channel into 8 ohms and 150 watts per channel into 4 ohms, and it is for the listener who wants genuine Accuphase engineering with ample everyday power. Its damping factor of 600 gives firm control over the woofer, and total harmonic distortion sits at 0.05 percent across 20 Hz to 20 kHz into 8 ohms. Frequency response runs from 20 Hz to 20 kHz at +0.0 / -0.2 dB at rated output, extending to 3 Hz to 150 kHz at +0.0 / -3.0 dB. It uses the AAVA volume control and current-feedback amplification, keeping phase shift low and behavior stable into real speaker loads. At 465 x 161 x 420 mm and 23.1 kg, it is the most compact and lightest of the four, drawing 69 W at idle. As the foundation of the line, it offers the Accuphase sound and feature set with the power headroom most rooms and speakers require.
What is the Accuphase E-4000, and who is it for?
The Accuphase E-4000 is the higher-powered Class-AB model, delivering 180 watts per channel into 8 ohms and 260 watts per channel into 4 ohms, and it is for the listener who wants substantial current reserves and grip for demanding or larger speakers. Its damping factor climbs to 800, tightening control over the woofer compared with the E-3000, while total harmonic distortion holds at 0.05 percent from 8 down to 2 ohms, showing its stability into lower impedances. Frequency response is 20 Hz to 20 kHz at +0.0 / -0.2 dB at rated output and 3 Hz to 150 kHz at +0.0 / -3.0 dB at 1 watt. It posts a signal to noise ratio of 112 dB at high level, uses instrumentation-amplifier balanced inputs to reject cable-borne noise, and offers 40 kilohms balanced and 20 kilohms line input impedance. At 465 x 181 x 428 mm and 24.9 kg, it is taller and heavier than the E-3000. It sits at the top of the Class-AB pairing, the choice when wattage and load-driving capability matter most.
What is the Accuphase E-700, and who is it for?
The Accuphase E-700 is a Pure Class-A integrated amplifier rated at 35 watts per channel into 8 ohms, 70 watts into 4 ohms, and 140 watts into 2 ohms, and it is for the listener who prioritizes linearity and refinement over raw wattage. Because Pure Class-A keeps the output transistors conducting at all times, it removes switching and crossover distortion, and the rated wattage is lower than a comparable Class-AB model by design, in exchange for maximum linearity. Its power roughly doubles as impedance halves, which shows how firmly it handles difficult loads, and its damping factor of 1000 is the highest tier in the range. Total harmonic distortion is just 0.03 percent into 8 ohms, and the signal to noise ratio reaches 121 dB at high level. It uses AAVA volume control and current-feedback amplification. At 465 x 191 x 428 mm and 24.9 kg, it draws 178 W at idle, reflecting the heat and inefficiency inherent to Class-A. This is the entry into Accuphase's Class-A integrated experience.
What is the Accuphase E-800S, and who is it for?
The Accuphase E-800S is the reference Pure Class-A integrated amplifier of the range, rated at 50 watts per channel into 8 ohms, 100 watts into 4 ohms, and 200 watts into 2 ohms, and it is for the listener who wants the most complete and uncompromised expression of the Accuphase integrated concept. Like the E-700 it runs Pure Class-A for maximum linearity, and its power doubles cleanly as impedance halves, showing exceptional load stability. It shares the top-tier damping factor of 1000 and matches the low 0.03 percent total harmonic distortion into 8 ohms, while pushing the signal to noise ratio to 122 dB, the highest in this group. It uses AAVA volume control, current-feedback amplification, and instrumentation-amplifier balanced inputs. Its build is the most substantial here at 465 x 239 x 502 mm and 35.7 kg, with 190 W drawn at idle. That extra mass, size, and power supply capacity are why it sits at the summit of the integrated line as the reference choice.
Head to Head and Use-Case Guidance
What is the difference between the E-3000 and the E-4000?
The difference is power, grip, and load capability, with the E-4000 stepping up on all three while both remain Class-AB. The E-3000 delivers 100 watts into 8 ohms and 150 into 4 ohms with a damping factor of 600, whereas the E-4000 delivers 180 watts into 8 ohms and 260 into 4 ohms with a damping factor of 800. The E-4000 also holds its 0.05 percent distortion figure down to 2 ohms and publishes a 112 dB signal to noise ratio, and it is taller and heavier at 24.9 kg versus 23.1 kg. If your speakers are efficient and your room is moderate, the E-3000 provides plenty of authority. If your speakers are power-hungry, dip to low impedances, or you simply want more headroom, the E-4000 is the stronger fit within the Class-AB pairing.
What is the difference between the E-700 and the E-800S?
The difference is capacity and completeness, with the E-800S being the larger, more powerful reference expression of the same Pure Class-A approach. The E-700 delivers 35 / 70 / 140 watts into 8 / 4 / 2 ohms, while the E-800S delivers 50 / 100 / 200 watts across the same loads, giving it more Class-A current for driving demanding speakers to higher levels. Both share the 1000 damping factor and 0.03 percent distortion into 8 ohms, but the E-800S edges the signal to noise ratio to 122 dB versus 121 dB. The most visible difference is build: the E-800S is 35.7 kg in a 465 x 239 x 502 mm chassis, far larger and heavier than the E-700 at 24.9 kg. Choose the E-700 for the Class-A character in a more manageable package, and the E-800S when you want the fullest reference version.
What is the difference between Class-AB and Class-A here?
The core difference is efficiency and power versus linearity. The Class-AB E-3000 and E-4000 run more efficiently and therefore publish higher wattage, 100 and 180 watts into 8 ohms respectively, making them well suited to filling larger rooms or driving less sensitive speakers. The Pure Class-A E-700 and E-800S keep their output transistors conducting at all times to remove switching and crossover distortion, delivering lower rated wattage (35 and 50 watts into 8 ohms) but with maximum linearity, and they run hotter, which is why their idle power draw is much higher. Neither approach is better in the abstract. The right one depends on whether you prioritize power and efficiency or linearity and refinement.
Which Accuphase integrated amplifier is best for demanding loudspeakers?
For speakers that are hard to drive, the answer depends on why they are demanding. If they are simply power-hungry or inefficient, the Class-AB E-4000 with 180 watts into 8 ohms and 260 into 4 ohms provides the most rated wattage and a damping factor of 800. If they present low impedances and benefit from current that doubles cleanly as impedance halves, the Pure Class-A E-800S is compelling, delivering 200 watts into 2 ohms with a damping factor of 1000. The E-700 also doubles down into low impedances with 140 watts into 2 ohms. In short, reach for the E-4000 when you need maximum wattage and headroom, and consider the E-800S when low-impedance stability and Class-A linearity are the priority.
Which Accuphase integrated amplifier is the entry point into the range?
The E-3000 is the entry point into the current integrated lineup. It provides the full Accuphase foundation, AAVA volume control, current-feedback amplification, analog power meters, and option slots, at 100 watts per channel into 8 ohms in the most compact and lightest chassis of the four. It is the natural starting place for a listener new to the range who wants genuine Accuphase engineering with everyday power. If you specifically want to begin with the Class-A side of the family rather than Class-AB, the E-700 is the entry into Pure Class-A.
Which Accuphase integrated amplifier is the reference choice?
The E-800S is the reference choice of the integrated range. It combines Pure Class-A operation, 50 watts into 8 ohms that doubles to 200 watts into 2 ohms, the top-tier 1000 damping factor, 0.03 percent distortion, and the highest signal to noise ratio here at 122 dB, all housed in the largest and heaviest chassis at 35.7 kg. That mass reflects a bigger power supply and greater capacity for maximum linearity and load control. It represents the fullest, most uncompromised expression of the Accuphase integrated concept.
Which model best suits smaller or more efficient systems?
For smaller rooms and efficient speakers, both the E-3000 and the E-700 are natural fits, with the choice coming down to Class-AB versus Class-A. The E-3000 is the most compact model, offers 100 watts of Class-AB power, and slots easily into most setups. The E-700 brings Pure Class-A linearity, and because efficient speakers do not demand large wattage, its 35 watts into 8 ohms can be an ideal match, letting the refinement of Class-A shine without needing high power. Pick the E-3000 for compactness and efficiency, the E-700 for Class-A character in a manageable size.
Making Your Decision
How do I decide between these four Accuphase integrated amplifiers?
Decide by starting with your speakers and your priority between power and linearity, then let the range's structure guide you. If you want a compact, efficient Class-AB amplifier and an accessible entry to the range, choose the E-3000 with its 100 watts and damping factor of 600. If you need the most Class-AB wattage and grip for demanding or larger speakers, choose the E-4000 with 180 watts, a damping factor of 800, and stable behavior down to 2 ohms. If you prioritize Pure Class-A linearity and refinement in a manageable package, especially with efficient speakers, choose the E-700 with its 1000 damping factor and 121 dB signal to noise ratio. If you want the reference integrated, the fullest Class-A expression with the greatest capacity, build, and load control, choose the E-800S at 50 watts into 8 ohms, 200 into 2 ohms, and 122 dB signal to noise ratio. Every one of these amplifiers carries the same Accuphase foundations of AAVA volume control, current-feedback amplification, heavy high-rigidity build, and option-slot upgradeability, so there is no wrong choice, only the one best matched to your room, your speakers, and whether Class-AB power or Class-A linearity speaks to you.