While headphone listening remains secondary to that of loudspeakers for most serious listeners, it's still an important alternative for many. And while good conventional headphones exist, electrostatics are usually considered first when the highest playback quality is required. As always, there are exceptions (Grado's headphones come immediately to mind), but most high-end headphones are electrostatic&#151;such designs offer the benefits of electrostatic loudspeakers without their dynamic limitations. <A HREF="http://www.stereophile.com/headphones/koss_esp950_electrostatic_stereop… year I reviewed</A> the Koss ESP/950 electrostatics (Vol.15 No.12), a remarkable set of headphones from the company that practically invented headphones for serious home listening. Here I listen to examples from two other companies, each known for its headphones since Pluto was a pup.

While headphone listening remains secondary to that of loudspeakers for most serious listeners, it's still an important alternative for many. And while good conventional headphones exist, electrostatics are usually considered first when the highest playback quality is required. As always, there are exceptions (Grado's headphones come immediately to mind), but most high-end headphones are electrostatic&#151;such designs offer the benefits of electrostatic loudspeakers without their dynamic limitations. <A HREF="http://www.stereophile.com/headphones/koss_esp950_electrostatic_stereop… year I reviewed</A> the Koss ESP/950 electrostatics (Vol.15 No.12), a remarkable set of headphones from the company that practically invented headphones for serious home listening. Here I listen to examples from two other companies, each known for its headphones since Pluto was a pup.

While headphone listening remains secondary to that of loudspeakers for most serious listeners, it's still an important alternative for many. And while good conventional headphones exist, electrostatics are usually considered first when the highest playback quality is required. As always, there are exceptions (Grado's headphones come immediately to mind), but most high-end headphones are electrostatic&#151;such designs offer the benefits of electrostatic loudspeakers without their dynamic limitations. <A HREF="http://www.stereophile.com/headphones/koss_esp950_electrostatic_stereop… year I reviewed</A> the Koss ESP/950 electrostatics (Vol.15 No.12), a remarkable set of headphones from the company that practically invented headphones for serious home listening. Here I listen to examples from two other companies, each known for its headphones since Pluto was a pup.

While headphone listening remains secondary to that of loudspeakers for most serious listeners, it's still an important alternative for many. And while good conventional headphones exist, electrostatics are usually considered first when the highest playback quality is required. As always, there are exceptions (Grado's headphones come immediately to mind), but most high-end headphones are electrostatic&#151;such designs offer the benefits of electrostatic loudspeakers without their dynamic limitations. <A HREF="http://www.stereophile.com/headphones/koss_esp950_electrostatic_stereop… year I reviewed</A> the Koss ESP/950 electrostatics (Vol.15 No.12), a remarkable set of headphones from the company that practically invented headphones for serious home listening. Here I listen to examples from two other companies, each known for its headphones since Pluto was a pup.

While headphone listening remains secondary to that of loudspeakers for most serious listeners, it's still an important alternative for many. And while good conventional headphones exist, electrostatics are usually considered first when the highest playback quality is required. As always, there are exceptions (Grado's headphones come immediately to mind), but most high-end headphones are electrostatic&#151;such designs offer the benefits of electrostatic loudspeakers without their dynamic limitations. <A HREF="http://www.stereophile.com/headphones/koss_esp950_electrostatic_stereop… year I reviewed</A> the Koss ESP/950 electrostatics (Vol.15 No.12), a remarkable set of headphones from the company that practically invented headphones for serious home listening. Here I listen to examples from two other companies, each known for its headphones since Pluto was a pup.

Way back in the mists of time, around 1980 to be exact, the Marantz company in Europe introduces a range of ostensibly cost-no-object solid-state electronics under the "Esotec" banner. Manufactured in Japan, but apparently designed in the USA, these ruggedly constructed components are noteworthy in that the power amplifiers are capable of being operated with the output stages running under class-A bias as well as class-B. The relatively expensive Esotec amplifiers sell in small numbers in the UK&#151;remember that this is before the rebirth of the British high end&#151;and pass into the history books. I am reminded of them, however, when I visit my friend Ivor Humphreys of <I>Gramophone</I> magazine at Christmas 1987; he is using a pair of the 30W mono class-A Marantz amplifiers to drive <A HREF="http://www.stereophile.com/floorloudspeakers/550">KEF R107</A>s&#151;and making very nice sounds.

Way back in the mists of time, around 1980 to be exact, the Marantz company in Europe introduces a range of ostensibly cost-no-object solid-state electronics under the "Esotec" banner. Manufactured in Japan, but apparently designed in the USA, these ruggedly constructed components are noteworthy in that the power amplifiers are capable of being operated with the output stages running under class-A bias as well as class-B. The relatively expensive Esotec amplifiers sell in small numbers in the UK&#151;remember that this is before the rebirth of the British high end&#151;and pass into the history books. I am reminded of them, however, when I visit my friend Ivor Humphreys of <I>Gramophone</I> magazine at Christmas 1987; he is using a pair of the 30W mono class-A Marantz amplifiers to drive <A HREF="http://www.stereophile.com/floorloudspeakers/550">KEF R107</A>s&#151;and making very nice sounds.

Way back in the mists of time, around 1980 to be exact, the Marantz company in Europe introduces a range of ostensibly cost-no-object solid-state electronics under the "Esotec" banner. Manufactured in Japan, but apparently designed in the USA, these ruggedly constructed components are noteworthy in that the power amplifiers are capable of being operated with the output stages running under class-A bias as well as class-B. The relatively expensive Esotec amplifiers sell in small numbers in the UK&#151;remember that this is before the rebirth of the British high end&#151;and pass into the history books. I am reminded of them, however, when I visit my friend Ivor Humphreys of <I>Gramophone</I> magazine at Christmas 1987; he is using a pair of the 30W mono class-A Marantz amplifiers to drive <A HREF="http://www.stereophile.com/floorloudspeakers/550">KEF R107</A>s&#151;and making very nice sounds.

Way back in the mists of time, around 1980 to be exact, the Marantz company in Europe introduces a range of ostensibly cost-no-object solid-state electronics under the "Esotec" banner. Manufactured in Japan, but apparently designed in the USA, these ruggedly constructed components are noteworthy in that the power amplifiers are capable of being operated with the output stages running under class-A bias as well as class-B. The relatively expensive Esotec amplifiers sell in small numbers in the UK&#151;remember that this is before the rebirth of the British high end&#151;and pass into the history books. I am reminded of them, however, when I visit my friend Ivor Humphreys of <I>Gramophone</I> magazine at Christmas 1987; he is using a pair of the 30W mono class-A Marantz amplifiers to drive <A HREF="http://www.stereophile.com/floorloudspeakers/550">KEF R107</A>s&#151;and making very nice sounds.