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Home
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Krell
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Krell Duo 300 XD Power Amp
Krell Duo 300 XD
Krell Presentation Page >
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Posted On
21.12.2025
Last Update On
21.12.2025
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English
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A comment on the new Krell sound from our XD upgraded amplifiers…Initially, there’s no comparison between the two models (pre and post XD upgrade) – the jump in resolution and musicality is massive. It’s like they are channeling the sound that made Krell famous, while incorporating the changes in technology that have come to be over the last 35 yearsWhen developing the DUO300-XD, David Goodman, our Director of Product Development, whom has been with Krell since 1987 and was largely responsible for design work on all Krell products, discovered that with modifications to the output stage, we could vastly improve sound quality, across the board, to all of our amplifiers.THE RESULTA deeper, darker, blacker background that provided significantly better macro and micro dynamics, more silence between the notes. Vocals and midrange took on an organic, yet more vibrant tone, enabling us to hear much more body, and even though our amps were great before, there was a very significant improvement.The speakers disappeared; yet, instruments were more focused with appropriate size and specific soundstage locations. All in all, a much better sounding, much improved experience that was easily, immediately heard by all that listened.Features & Specifications300 Watt Amplifier Featuring Krell iBias TechnologySpecificationsFrequency response20 Hz to 20 kHz +0, -0.13 dB0.5 Hz to 100 kHz +0, -3 dBSignal-to-noise ratio>98 dB, wideband, unweighted, referred to full power output>116 dB, “A”-weightedGain26.2 dBTotal harmonic distortion<0.045% at 1 kHz, at 400 W, 8 Ω<0.17% at 20 kHz, at 400 W, 8 ΩInput ImpedanceSingle-ended: 100 kΩBalanced: 200 kΩInput sensitivitySingle-ended or balanced: 2.4 V RMSOutput power300 W RMS at 8 Ω540 W RMS at 4 ΩOutput voltage138 V peak-to-peak49 V RMSOutput current16 A peakSlew rate40 V/μsOutput impedance<0.017 , 20 Hz to 20 kHz Damping factor >470, 20 Hz to 20 kHz, referred to 8 ΩPower consumptionStandby: 4 WIdle: 180 WMaximum: 1600 WHeat outputStandby: 13.7 BTU/hr.Idle: 615 BTU/hr.Maximum: 5677 BTU/hr.Inputs2 single-ended via RCA connector2 balanced via XLR connectorOutputs2 pairs binding postsDimensions17.1 in. W x 7.65 in. H x 21.10in. D434 mm W x 194 mm H x 536mm DWeight80 lbs., 3.64 kg (shipping)70 lbs., 31.8 kg (unit only)
Ein Kommentar zum neuen Krell-Sound unserer aufgerüsteten XD-Verstärker... Anfangs gibt es keinen Vergleich zwischen den beiden Modellen (vor und nach XD) – der Sprung in Auflösung und Musikalität ist enorm. Es ist, als würden sie den Sound kanalisieren, der Krell berühmt gemacht hat, während sie gleichzeitig die technologischen Veränderungen der letzten 35 Jahrebei der Entwicklung des DUO300-XD integrieren, David Goodman, unser Director of Product Development, der seit 1987 bei Krell ist und maßgeblich für die Designarbeit aller Krell-Produkte verantwortlich war, Entdeckte, dass wir mit Modifikationen an der Ausgangsstufe die Klangqualität für alle unsere Verstärker erheblich verbessern konnten.DAS ERGEBNISEin tieferer, dunklerer, schwärzer Hintergrund, der deutlich bessere Makro- und Mikrodynamik bot, mehr Stille zwischen den Noten. Gesang und Mittenbereich nahmen einen organischen, aber lebendigeren Klang an, sodass wir viel mehr Körper hören konnten, und obwohl unsere Verstärker vorher großartig waren, gab es eine sehr deutliche Verbesserung.Die Lautsprecher verschwanden; Doch die Instrumente waren stärker auf die passende Größe und spezifische Bühnenorte ausgerichtet. Alles in allem ein viel besser klingendes, deutlich verbessertes Erlebnis, das von allen, die zuhörten, sofort zu hören war.Funktionen & Spezifikationen300-Watt-Verstärker mit Krell iBias-TechnologieSpezifikationenFrequenzgang20 Hz bis 20 kHz +0, -0,13 dB0,5 Hz bis 100 kHz +0, -3 dBSignal-Rausch-Verhältnis>98 dB, Breitband, ungewichtet, bezeichnet als volle Ausgangsleistung>116 dB, "A"-gewichteterGewinn26,2 dBGesamtharmonische Verzerrung<0,045 % bei 1 kHz, bei 400 W, 8 Ω<0,17 % bei 20 kHz, bei 400 W, 8 ΩEingangsimpedanzEinseitig: 100 kΩSymmetrisch: 200 kΩEingangsempfindlichkeitEinseitig oder symmetrisch: 2,4 V RMSAusgangsleistung300 W RMS bei 8 Ω540 W RMS bei 4 ΩAusgangsspannung138 V Spitzenspannung49 V RMSAusgangsstrom16 A Spitzenschubrate40 V/μsAusgangsimpedanz<0,017, 20 Hz bis 20 kHz Dämpfungsfaktor >470, 20 Hz bis 20 kHz, bezeichnet als 8 ΩStromverbrauchStandby: 4 WLeerlauf: 180 WMaximal: 1600 WWärmeausgangStandby: 13,7 BTU/h.Leerlauf: 615 BTU/stunde.Maximal: 5677 BTU/Stunde.Eingänge2 einseitig über RCA-Stecker2 symmetrisch über XLR-Stecker Ausgaben2 Paare BindepostenAbmessungen17,1 Zoll. Breite x 7,65 Zoll. H x 21,10 Zoll. D434 mm B x 194 mm H x 536 mm DGewicht80 lbs., 3,64 kg (Versand) 70 lbs., 31,8 kg (nur Einheit)
Un comentario sobre el nuevo sonido Krell de nuestros amplificadores mejorados XD... Al principio, no hay comparación entre los dos modelos (antes y después de la actualización XD): el salto en resolución y musicalidad es enorme. Es como si canalizaran el sonido que hizo famoso a Krell, mientras incorporan los cambios tecnológicos que han surgido en los últimos 35 años. Al desarrollar el DUO300-XD, David Goodman, nuestro Director de Desarrollo de Producto, que está en Krell desde 1987 y fue en gran parte responsable del trabajo de diseño de todos los productos Krell, descubrimos que, con modificaciones en la etapa de salida, podíamos mejorar enormemente la calidad del sonido, en todos nuestros amplificadores.EL RESULTADOUn fondo más profundo, oscuro y negro que proporcionaba una dinámica macro y micro significativamente mejor, más silencio entre las notas. Las voces y el rango medio adquirieron un tono orgánico, pero más vibrante, permitiéndonos escuchar mucho más cuerpo, y aunque nuestros amplificadores eran geniales antes, hubo una mejora muy significativa.Los altavoces desaparecieron; Sin embargo, los instrumentos estaban más enfocados, con el tamaño adecuado y ubicaciones específicas del escenario sonoro. En conjunto, una experiencia mucho mejor y mucho mejorada que fue fácilmente y inmediatamente escuchada por todos los que escucharon.Características y especificacionesAmplificador de 300 vatios con Krell iBias Especificaciones de la tecnologíaRespuesta en frecuencia20 Hz a 20 kHz +0, -0,13 dB0,5 Hz a 100 kHz +0, -3 dBRelación señal-ruido>98 dB, banda ancha, sin ponderación, referido a potencia máxima de salida>116 dB, ganancia ponderada en "A"26,2 dBDistorsión armónica total<0,045% a 1 kHz, a 400 W, 8 Ω<0,17% a 20 kHz, a 400 W, 8 ΩImpedancia de entradaExtremo simple: 100 kΩEquilibrado: 200 kΩSensibilidad de entradaExtremo simple o equilibrado: 2,4 V RMSPotencia de salida300 W RMS a 8 Ω540 W RMS a 4 ΩTensión de salida138 V picoa pico 49 V RMSCorriente de salida16 A picoTasa de variación40 V/μsImpedancia de salida<0,017, 20 Hz a 20 kHz Factor de amortiguamiento >470, 20 Hz a 20 kHz, referido a 8 ΩConsumo de energíaEspera de energía: 4 WReposo: 180 WMáximo de calor: 1600 WPotencia de calor: 13,7 BTU/h.Reposo: 615 BTU/hora.Máximo: 5677 BTU/h.Entradas2 single-ended mediante conector RCA2 balanceadas mediante conector XLRSalidas2 pares de postes de enlaceDimensiones17,1 in. Ancho x 7,65 pulgadas. H x 21,10 pulgadas. D434 mm de ancho x 194 mm de alto x 536 mm DPeso80 lbs., 3,64 kg (envío) 70 lbs., 31,8 kg (solo unidad)
XD yükseltilmiş amplifikatörlerimizden gelen yeni Krell sesi hakkında bir yorum... Başlangıçta, iki model arasında (XD yükseltme öncesi ve sonrası) karşılaştırma yok – çözünürlük ve müzikalite sıçraması devasa. Sanki Krell'i ünlü yapan sesi kanalize ediyorlar, aynı zamanda son 35 yılda gerçekleşen teknoloji değişikliklerini de dahilediyorlar. DUO300-XD'yi geliştirirken, 1987'den beri Krell'de çalışan ve tüm Krell ürünlerinde tasarım çalışmalarından büyük ölçüde sorumlu olan Ürün Geliştirme Direktörümüz David Goodman, çıkış aşamasında yapılan değişikliklerle tüm amplifikatörlerimizin ses kalitesini büyük ölçüde iyileştirebileceğimizi keşfettik.SONUÇDaha derin, daha koyu ve siyah bir arka plan çok daha iyi makro ve mikro dinamikler sağladı, notalar arasında daha fazla sessizlik. Vokal ve orta frekans organik ama daha canlı bir ton aldı, çok daha fazla vücut duymamızı sağladı ve amfilerimiz önceden harika olmasına rağmen çok önemli bir gelişme oldu.Hoparlörler kayboldu; ancak enstrümanlar daha odaklı, uygun boyut ve belirli sahne konumlarıyla gerçekleşti. Genel olarak, çok daha iyi ve çok daha iyi bir deneyim oldu ve dinleyen herkes tarafından kolayca ve hemen duyuldu.Özellikler ve Özellikler300 Watt Amplifikatör Krell iBias TeknolojisiÖzellikleriFrekans tepkisi20 Hz ile 20 kHz +0, -0.13 dB0.5 Hz ile 100 kHz +0, -3 dBSinyal-gürültü oranı>98 dB, geniş bant, ağırlıksız, tam güç çıkışı anlamına gelir>116 dB, "A" ağırlıklıKazanç26.2 dBToplam harmonik bozulma<0.045% 1 kHz'de, 400 W'ta, 8 Ω<0,17% 20 kHz, 400 W, 8 ΩGiriş EmpedansıTek uçlu: 100 kΩDengeli: 200 kΩGiriş hassasiyetiTek uçlu veya dengeli: 2,4 V RMSÇıkışgücü 8'de 300 W RMS RMS 8 Ω540 W RMS 4 ΩÇıkış gerilimi138 V tepedentepeye 49 V RMSÇıkış akımı16 A tepeDeğişim hızı40 V/μsÇıkış empedansı<0.017 , 20 Hz ile 20 kHz Sönümleme faktörü >470, 20 Hz ile 20 kHz, 8 ΩGüç tüketimiBekleme: 4 WBoşta: 180 WMaksimum: 1600 WIsı çıkışıBekleme Bekleme: 13,7 BTU/saat.Boşta: 615 BTU/saat.Maksimum: 5677 BTU/saat.Girişler2 tek uçlu RCA konnektörüzerinden 2 XLR konnektasyonu ile dengelenmişÇıkışlar2 çift bağlama direğiBoyutları17.1 in. Boyut x 7.65 inç. H x 21.10in. D434 mm B x 194 mm T x 536mm DAğırlık80 lbs., 3.64 kg (nakliye ağırlığı) 70 lbs., 31.8 kg (sadece birim)
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